{{navi|Atombau|Radioaktivität}} '''Isotope''' (griech. ''isos'' = gleich; ''topos'' = der Ort) sind alle Atomarten (= [[Nuklide]]) eines [[PSE|Elementes]], die sich durch die Anzahl der Neutronen im Kern unterscheiden. Hierdurch ergeben sich bei identischen [[Ordnungszahl]]en unterschiedliche Massenzahlen.
Zur Unterscheidung werden Isotope entsprechend dieser Massenzahl benannt, z. B. für
das Element [[Kohlenstoff]] „C-12“ (sprich: "C-zwölf") oder „C-14“. Die alternative Schreibweise dieser Isotope lautet: <sup>12</sup>C bzw. <sup>14</sup>C usw.
{{cb|8|16|17}} Üblicherweise werden stabile und instabile (= [[radioaktiv]]e) Isotope unterschieden. [[Radioaktiv]]e Isotope zerfallen mit einer charakteristischen [[Halbwertszeit]]. *[[Media:IsotopeIsotope_AB .pdf|Übung1 : Arbeitsblatt "Isotope"]] und [[Media:Isotope2009.pdf|Lösungen]], [http://www.mathe-schule.de/download/pdf/Physik/Nuklidaufbau_Aufgaben.pdf erweiterte Fassung] *Übung 2. Wie lassen sich die gebrochenen Massenzahlen der [[PSE|Elemente im PSE]] erklären?<br>Berechne hierzu aus der [[Isotope#Chlor|Isotopenverteilung]] die Atommasse für das Element [[Chlor]].<br>[http://www.roro-seiten.de/physik/kerne/isotopie.html Lösung ]
'''Praxisbeispiele:'''
* Altersbestimmung durch die [[Radiocarbonmethode]]
* Ernährung: [[Isotopenanalyse]]
* [[Kernenergie]]
* [http://www2.chemie.uni-erlangen.de/projects/vsc/chemie-mediziner-neu/atombau/radioaktiv_medizin.html Radioaktive Isotope in der Medizin]
=== [[Wasserstoff]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=H-1 <subsup >1</subsup >H] || 99,9885 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=H-2 <subsup >2</subsup >H] || 0,0115 % || stabil|| "D", "Deuterium"
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=H-3 <subsup >3</subsup >H] || [[radioaktiv]] - % || 12,3 Jahre|| "T", "Tritium", [[radioaktiv]], kosmogen, Kernwaffenfallout, Leuchtfarben, Kerntechnik
|-
|}
* [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=H alle bekannten Wasserstoff-Isotope]
=== [[Helium]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=He-3 <subsup >3</subsup >He] || 0,000137 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=He-4 <subsup >4</subsup >He] || 99,999863 % || stabil||
|-
|}
=== [[Lithium]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Li-6 <subsup >6</subsup >Li] || 7,59 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Li-7 <subsup >7</subsup >Li] || 92,41 % || stabil||
|-
|}
=== [[Beryllium]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Be-7 <subsup >7</subsup >Be] || - % || 53 Tage || [[radioaktiv]] % || 53 Tage, kosmogen
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Be-9 <subsup >9</subsup >Be] || 100 % || stabil||
|-
|}
=== [[Bor]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=B-10 <subsup >10</subsup >B] || 19,9 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=B-11 <subsup >11</subsup >B] || 80,1 % || stabil||
|-
|}
=== [[Kohlenstoff]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=C-12 <subsup >12</subsup >C] || 98,93 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=C-13 <subsup >13</subsup >C] || 1,07 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=C-14 <subsup >14</subsup >C] || - % || 5.730 Jahre || [[radioaktiv]] % || 5730 Jahre, kosmogen, Kerntechnik, Medizin, [[Radiocarbonmethode]]
|-
|}
* [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=C alle bekannten Kohlenstoff-Isotope]
=== [[Stickstoff]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=N-14 <subsup >14</subsup >N] || 99,632 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=N-15 <subsup >15</subsup >N] || 0,368 % || stabil||
|-
|}
=== [[Sauerstoff]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=O-16 <subsup >16</subsup >O] || 99,757 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=O-17 <subsup >17</subsup >O] || 0,038 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=O-18 <subsup >18</subsup >O] || 0,205 % || stabil||
|-
|}
=== [[Fluor]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=F-19 <subsup >19</subsup >F] || 100 % || stabil||
|-
|}
=== [[Neon]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Ne-20 <subsup >20</subsup >Ne] || 90,48 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Ne-21 <subsup >21</subsup >Ne] || 0,27 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Ne-22 <subsup >22</subsup >Ne] || 9,25 % || stabil||
|-
|}
=== [[Natrium]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Na-22 <subsup >22</subsup >Na] || [[radioaktiv]] - % || 2,6 Jahre|| [[radioaktiv]], kosmogen
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Na-23 <subsup >23</subsup >Na] || 100 % || stabil||
|-
|}
=== [[Magnesium]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Mg-24 <subsup >24</subsup >Mg] || 78,99 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Mg-25 <subsup >25</subsup >Mg] || 10 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Mg-26 <subsup >26</subsup >Mg] || 11,01 % || stabil||
|-
|}
=== [[Aluminium]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Al-27 <subsup >27</subsup >Al] || 100 % || stabil||
|-
|}
=== [[Silicium]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Si-28 <subsup >28</subsup >Si] || 92,2297 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Si-29 <subsup >29</subsup >Si] || 4,6832 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Si-30 <subsup >30</subsup >Si] || 3,0872 % || stabil||
|-
|}
=== [[Phosphor]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=P-31 <subsup >31</subsup >P] || 100 % || stabil||
|-
|}
=== [[Schwefel]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=S-32 <subsup >32</subsup >S] || 94,93 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=S-33 <subsup >33</subsup >S] || 0,76 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=S-34 <subsup >34</subsup >S] || 4,29 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=S-36 <subsup >36</subsup >S] || 0,02 % || stabil||
|-
|}
=== [[Chlor]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Cl-35 <subsup >35</subsup >Cl] || 75,78 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Cl-37 <subsup >37</subsup >Cl] || 24,22 % || stabil||
|-
|}
=== [[Argon]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Ar-36 <subsup >36</subsup >Ar] || 0,3365 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Ar-38 <subsup >38</subsup >Ar] || 0,0632 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Ar-40 <subsup >40</subsup >Ar] || 99,6003 % || stabil||
|-
|}
=== [[Kalium]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=K-39 <subsup >39</subsup >K] || 93,2581 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=K-40 <subsup >40</subsup >K] || 0,0117 % || 1,27 Milliarden Jahre|| [[radioaktiv]], Erdkruste
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=K-41 <subsup >41</subsup >K] || 6,7302 % || stabil||
|-
|}
=== [[Calcium]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Ca-40 <subsup >40</subsup >Ca] || 96,941 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Ca-42 <subsup >42</subsup >Ca] || 0,647 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Ca-43 <subsup >43</subsup >Ca] || 0,135 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Ca-44 <subsup >44</subsup >Ca] || 2,086 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Ca-46 <subsup >46</subsup >Ca] || 0,004 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Ca-48 <subsup >48</subsup >Ca] || 0,187 % || stabil||
|-
|}
=== [[Scandium]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Sc-45 <subsup >45</subsup >Sc] || 100 % || stabil||
|-
|}
=== [[Titan]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Ti-46 <subsup >46</subsup >Ti] || 8,25 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Ti-47 <subsup >47</subsup >Ti] || 7,44 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Ti-48 <subsup >48</subsup >Ti] || 73,72 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Ti-49 <subsup >49</subsup >Ti] || 5,41 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Ti-50 <subsup >50</subsup >Ti] || 5,18 % || stabil||
|-
|}
=== [[Vanadium]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=V-50 <subsup >50</subsup >V] || 0,25 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=V-51 <subsup >51</subsup >V] || 99,75 % || stabil||
|-
|}
=== [[Chrom]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Cr-50 <subsup >50</subsup >Cr] || 4,345 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Cr-52 <subsup >52</subsup >Cr] || 83,789 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Cr-53 <subsup >53</subsup >Cr] || 9,501 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Cr-54 <subsup >54</subsup >Cr] || 2,365 % || stabil||
|-
|}
=== [[Mangan]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Mn-55 <subsup >55</subsup >Mn] || 100 % || stabil||
|-
|}
=== [[Eisen]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Fe-54 <subsup >54</subsup >Fe] || 5,845 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Fe-56 <subsup >56</subsup >Fe] || 91,754 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Fe-57 <subsup >57</subsup >Fe] || 2,119 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Fe-58 <subsup >58</subsup >Fe] || 0,282 % || stabil||
|-
|}
=== [[Cobalt]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Co-59 <subsup >59</subsup >Co] || 100 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Co-60 <subsup >60</subsup >Co] || [[radioaktiv]] - % || 5,3 Jahre|| [[radioaktiv]], Medizin (Bestrahlung von Krebszellen), Kerntechnik
|-
|}
* [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Co alle bekannten Cobalt-Isotope]
=== [[Nickel]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Ni-58 <subsup >58</subsup >Ni] || 68,0769 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Ni-60 <subsup >60</subsup >Ni] || 26,2231 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Ni-61 <subsup >61</subsup >Ni] || 1,1399 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Ni-62 <subsup >62</subsup >Ni] || 3,6345 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Ni-64 <subsup >64</subsup >Ni] || 0,9256 % || stabil||
|-
|}
=== [[Kupfer]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Cu-63 <subsup >63</subsup >Cu] || 69,17 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Cu-65 <subsup >65</subsup >Cu] || 30,83 % || stabil||
|-
|}
=== [[Zink]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Zn-64 <subsup >64</subsup >Zn] || 48,63 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Zn-66 <subsup >66</subsup >Zn] || 27,9 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Zn-67 <subsup >67</subsup >Zn] || 4,1 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Zn-68 <subsup >68</subsup >Zn] || 18,75 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Zn-70 <subsup >70</subsup >Zn] || 0,62 % || stabil||
|-
|}
=== [[Gallium]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Ga-69 <subsup >69</subsup >Ga] || 60,108 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Ga-71 <subsup >71</subsup >Ga] || 39,892 % || stabil||
|-
|}
=== [[Germanium]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Ge-70 <subsup >70</subsup >Ge] || 20,84 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Ge-72 <subsup >72</subsup >Ge] || 27,54 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Ge-73 <subsup >73</subsup >Ge] || 7,73 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Ge-74 <subsup >74</subsup >Ge] || 36,28 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Ge-76 <subsup >76</subsup >Ge] || 7,61 % || stabil||
|-
|}
=== [[Arsen]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=As-75 <subsup >75</subsup >As] || 100 % || stabil||
|-
|}
=== [[Selen]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Se-74 <subsup >74</subsup >Se] || 0,89 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Se-76 <subsup >76</subsup >Se] || 9,37 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Se-77 <subsup >77</subsup >Se] || 7,63 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Se-78 <subsup >78</subsup >Se] || 23,77 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Se-80 <subsup >80</subsup >Se] || 49,61 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Se-82 <subsup >82</subsup >Se] || 8,73 % || stabil||
|-
|}
=== [[Brom]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Br-79 <subsup >79</subsup >Br] || 50,69 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Br-81 <subsup >81</subsup >Br] || 49,31 % || stabil||
|-
|}
=== [[Krypton]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Kr-78 <subsup >78</subsup >Kr] || 0,35 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Kr-80 <subsup >80</subsup >Kr] || 2,28 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Kr-82 <subsup >82</subsup >Kr] || 11,58 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Kr-83 <subsup >83</subsup >Kr] || 11,49 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Kr-84 <subsup >84</subsup >Kr] || 57 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Kr-86 <subsup >86</subsup >Kr] || 17,3 % || stabil||
|-
|}
=== [[Rubidium]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Rb-85 <subsup >85</subsup >Rb] || 72,17 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Rb-87 <subsup >87</subsup >Rb] || 27,83 % || stabil||
|-
|}
=== [[Strontium]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Sr-84 <subsup >84</subsup >Sr] || 0,56 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Sr-86 <subsup >86</subsup >Sr] || 9,86 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Sr-87 <subsup >87</subsup >Sr] || 7 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Sr-88 <subsup >88</subsup >Sr] || 82,58 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Sr-90 <subsup >90</subsup >Sr] || - % || 28,5 Jahre|| [[radioaktiv]], Kernwaffenfallout, Kerntechnik, Medizin
|-
|}
=== [[Yttrium]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Y-89 <subsup >89</subsup >Y] || 100 % || stabil||
|-
|}
=== [[Zirconium]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Zr-90 <subsup >90</subsup >Zr] || 51,45 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Zr-91 <subsup >91</subsup >Zr] || 11,22 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Zr-92 <subsup >92</subsup >Zr] || 17,15 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Zr-94 <subsup >94</subsup >Zr] || 17,38 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Zr-96 <subsup >96</subsup >Zr] || 2,8 % || stabil||
|-
|}
=== [[Niob]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Nb-93 <subsup >93</subsup >Nb] || 100 % || stabil||
|-
|}
=== [[Molybdän]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Mo-92 <subsup >92</subsup >Mo] || 14,84 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Mo-94 <subsup >94</subsup >Mo] || 9,25 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Mo-95 <subsup >95</subsup >Mo] || 15,92 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Mo-96 <subsup >96</subsup >Mo] || 16,68 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Mo-97 <subsup >97</subsup >Mo] || 9,55 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Mo-98 <subsup >98</subsup >Mo] || 24,13 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Mo-100 <subsup >100</subsup >Mo] || 9,63 % || stabil||
|-
|}
=== [[Technetium]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Tc-98 <subsup >98</subsup >Tc] || - % || 6,6 Millionen Jahre|| [[radioaktiv]]
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Tc-99m <subsup >99m</subsup >Tc] || - % || stabil6,0 Stunden || [[radioaktiv]], Nuklearmedizin
|-
|}
=== [[Ruthenium]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Ru-96 <subsup >96</subsup >Ru] || 5,54 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Ru-98 <subsup >98</subsup >Ru] || 1,87 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Ru-99 <subsup >99</subsup >Ru] || 12,76 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Ru-100 <subsup >100</subsup >Ru] || 12,6 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Ru-101 <subsup >101</subsup >Ru] || 17,06 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Ru-102 <subsup >102</subsup >Ru] || 31,55 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Ru-104 <subsup >104</subsup >Ru] || 18,62 % || stabil||
|-
|}
=== [[Rhodium]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Rh-103 <subsup >103</subsup >Rh] || 100 % || stabil||
|-
|}
=== [[Palladium]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Pd-102 <subsup >102</subsup >Pd] || 1,02 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Pd-104 <subsup >104</subsup >Pd] || 11,14 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Pd-105 <subsup >105</subsup >Pd] || 22,33 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Pd-106 <subsup >106</subsup >Pd] || 27,33 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Pd-108 <subsup >108</subsup >Pd] || 26,46 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Pd-110 <subsup >110</subsup >Pd] || 11,72 % || stabil||
|-
|}
=== [[Silber]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Ag-107 <subsup >107</subsup >Ag] || 51,839 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Ag-109 <subsup >109</subsup >Ag] || 48,161 % || stabil||
|-
|}
=== [[Cadmium]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Cd-106 <subsup >106</subsup >Cd] || 1,25 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Cd-108 <subsup >108</subsup >Cd] || 0,89 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Cd-110 <subsup >110</subsup >Cd] || 12,49 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Cd-111 <subsup >111</subsup >Cd] || 12,8 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Cd-112 <subsup >112</subsup >Cd] || 24,13 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Cd-113 <subsup >113</subsup >Cd] || 12,22 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Cd-114 <subsup >114</subsup >Cd] || 28,73 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Cd-116 <subsup >116</subsup >Cd] || 7,49 % || stabil||
|-
|}
=== [[Indium]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=In-113 <subsup >113</subsup >In] || 4,29 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=In-115 <subsup >115</subsup >In] || 95,71 % || stabil||
|-
|}
=== [[Zinn]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Sn-112 <subsup >112</subsup >Sn] || 0,97 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Sn-114 <subsup >114</subsup >Sn] || 0,66 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Sn-115 <subsup >115</subsup >Sn] || 0,34 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Sn-116 <subsup >116</subsup >Sn] || 14,54 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Sn-117 <subsup >117</subsup >Sn] || 7,68 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Sn-118 <subsup >118</subsup >Sn] || 24,22 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Sn-119 <subsup >119</subsup >Sn] || 8,59 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Sn-120 <subsup >120</subsup >Sn] || 32,58 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Sn-122 <subsup >122</subsup >Sn] || 4,63 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Sn-124 <subsup >124</subsup >Sn] || 5,79 % || stabil||
|-
|}
=== [[Antimon]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Sb-121 <subsup >121</subsup >Sb] || 57,21 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Sb-123 <subsup >123</subsup >Sb] || 42,79 % || stabil||
|-
|}
=== [[Tellur]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Te-120 <subsup >120</subsup >Te] || 0,09 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Te-122 <subsup >122</subsup >Te] || 2,55 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Te-123 <subsup >123</subsup >Te] || 0,89 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Te-124 <subsup >124</subsup >Te] || 4,74 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Te-125 <subsup >125</subsup >Te] || 7,07 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Te-126 <subsup >126</subsup >Te] || 18,84 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Te-128 <subsup >128</subsup >Te] || 31,74 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Te-130 <subsup >130</subsup >Te] || 34,08 % || stabil||
|-
|}
=== [[Iod]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=I-125 <subsup >125</subsup >I] || - % || 60 Tage || [[radioaktiv]] % || 60 Tage, Medizin
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=I-127 <subsup >127</subsup >I] || 100 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=I-131 <subsup >131</subsup >I] || - % || 8 Tage || [[radioaktiv]] % || 8 Tage, Medizin, Kerntechnik, s. [http://www2.chemie.uni-erlangen.de/projects/vsc/chemie-mediziner-neu/atombau/schilddruese.html#Radiojodtest Radiojodtest bzw. Radiojodtherapie]
|-
|}
* [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=I alle bekannten Iod-Isotope]
=== [[Xenon]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Xe-124 <subsup >124</subsup >Xe] || 0,09 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Xe-126 <subsup >126</subsup >Xe] || 0,09 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Xe-128 <subsup >128</subsup >Xe] || 1,92 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Xe-129 <subsup >129</subsup >Xe] || 26,44 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Xe-130 <subsup >130</subsup >Xe] || 4,08 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Xe-131 <subsup >131</subsup >Xe] || 21,18 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Xe-132 <subsup >132</subsup >Xe] || 26,89 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Xe-134 <subsup >134</subsup >Xe] || 10,44 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Xe-136 <subsup >136</subsup >Xe] || 8,87 % || stabil||
|-
|}
=== [[Caesium]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Cs-133 <subsup >133</subsup >Cs] || 100 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Cs-134 <subsup >134</subsup >Cs] || - % || 2 Jahre || [[radioaktiv]] % || 2 Jahre, Kerntechnik, [[Tschernobyl]]
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Cs-137 <subsup >137</subsup >Cs] || - % || 30 Jahre || [[radioaktiv]] % || 30 Jahre, Kernwaffenfallout, [[Tschernobyl]], Kerntechnik, Medizin
|-
|}
=== [[Barium]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Ba-130 <subsup >130</subsup >Ba] || 0,106 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Ba-132 <subsup >132</subsup >Ba] || 0,101 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Ba-134 <subsup >134</subsup >Ba] || 2,417 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Ba-135 <subsup >135</subsup >Ba] || 6,592 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Ba-136 <subsup >136</subsup >Ba] || 7,854 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Ba-137 <subsup >137</subsup >Ba] || 11,232 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Ba-138 <subsup >138</subsup >Ba] || 71,698 % || stabil||
|-
|}
=== [[Lanthan]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=La-138 <subsup >138</subsup >La] || 0,09 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=La-139 <subsup >139</subsup >La] || 99,91 % || stabil||
|-
|}
=== [[Cer]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Ce-136 <subsup >136</subsup >Ce] || 0,185 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Ce-138 <subsup >138</subsup >Ce] || 0,251 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Ce-140 <subsup >140</subsup >Ce] || 88,45 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Ce-142 <subsup >142</subsup >Ce] || 11,114 % || stabil||
|-
|}
=== [[Praseodym]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Pr-141 <subsup >141</subsup >Pr] || 100 % || stabil||
|-
|}
=== [[Neodym]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Nd-142 <subsup >142</subsup >Nd] || 27,2 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Nd-143 <subsup >143</subsup >Nd] || 12,2 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Nd-144 <subsup >144</subsup >Nd] || 23,8 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Nd-145 <subsup >145</subsup >Nd] || 8,3 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Nd-146 <subsup >146</subsup >Nd] || 17,2 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Nd-148 <subsup >148</subsup >Nd] || 5,7 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Nd-150 <subsup >150</subsup >Nd] || 5,6 % || stabil||
|-
|}
=== [[Promethium]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Pm-147 <subsup >147</subsup >Pm] || [[radioaktiv]] - % || 2,6 Jahre|| [[radioaktiv]], Leuchtfarben
|-
|}
* [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Pm alle bekannten Promethium-Isotope]
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Pm- <sub></sub>Pm] || % || stabil
|-
=== [[Samarium]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Sm-144 <subsup >144</subsup >Sm] || 3,07 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Sm-147 <subsup >147</subsup >Sm] || 14,99 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Sm-148 <subsup >148</subsup >Sm] || 11,24 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Sm-149 <subsup >149</subsup >Sm] || 13,82 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Sm-150 <subsup >150</subsup >Sm] || 7,38 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Sm-152 <subsup >152</subsup >Sm] || 26,75 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Sm-154 <subsup >154</subsup >Sm] || 22,75 % || stabil||
|-
|}
=== [[Europium]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Eu-151 <subsup >151</subsup >Eu] || 47,81 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Eu-153 <subsup >153</subsup >Eu] || 52,19 % || stabil||
|-
|}
=== [[Gadolinium]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Gd-152 <subsup >152</subsup >Gd] || 0,2 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Gd-154 <subsup >154</subsup >Gd] || 2,18 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Gd-155 <subsup >155</subsup >Gd] || 14,8 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Gd-156 <subsup >156</subsup >Gd] || 20,47 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Gd-157 <subsup >157</subsup >Gd] || 15,65 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Gd-158 <subsup >158</subsup >Gd] || 24,84 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Gd-160 <subsup >160</subsup >Gd] || 21,86 % || stabil||
|-
|}
=== [[Terbium]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Tb-159 <subsup >159</subsup >Tb] || 100 % || stabil||
|-
|}
=== [[Dysprosium]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Dy-156 <subsup >156</subsup >Dy] || 0,06 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Dy-158 <subsup >158</subsup >Dy] || 0,1 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Dy-160 <subsup >160</subsup >Dy] || 2,34 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Dy-161 <subsup >161</subsup >Dy] || 18,91 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Dy-162 <subsup >162</subsup >Dy] || 25,51 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Dy-163 <subsup >163</subsup >Dy] || 24,9 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Dy-164 <subsup >164</subsup >Dy] || 28,18 % || stabil||
|-
|}
=== [[Holmium]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Ho-165 <subsup >165</subsup >Ho] || 100 % || stabil||
|-
|}
=== [[Erbium]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Er-162 <subsup >162</subsup >Er] || 0,14 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Er-164 <subsup >164</subsup >Er] || 1,61 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Er-166 <subsup >166</subsup >Er] || 33,61 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Er-167 <subsup >167</subsup >Er] || 22,93 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Er-168 <subsup >168</subsup >Er] || 26,78 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Er-170 <subsup >170</subsup >Er] || 14,93 % || stabil||
|-
|}
=== [[Thulium]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Tm-169 <subsup >169</subsup >Tm] || 100 % || stabil||
|-
|}
=== [[Ytterbium]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Yb-168 <subsup >168</subsup >Yb] || 0,13 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Yb-170 <subsup >170</subsup >Yb] || 3,04 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Yb-171 <subsup >171</subsup >Yb] || 14,28 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Yb-172 <subsup >172</subsup >Yb] || 21,83 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Yb-173 <subsup >173</subsup >Yb] || 16,13 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Yb-174 <subsup >174</subsup >Yb] || 31,83 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Yb-176 <subsup >176</subsup >Yb] || 12,76 % || stabil||
|-
|}
=== [[Lutetium]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Lu-175 <subsup >175</subsup >Lu] || 97,41 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Lu-176 <subsup >176</subsup >Lu] || 2,59 % || stabil||
|-
|}
=== [[Hafnium]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Hf-174 <subsup >174</subsup >Hf] || 0,16 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Hf-176 <subsup >176</subsup >Hf] || 5,26 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Hf-177 <subsup >177</subsup >Hf] || 18,6 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Hf-178 <subsup >178</subsup >Hf] || 27,28 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Hf-179 <subsup >179</subsup >Hf] || 13,62 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Hf-180 <subsup >180</subsup >Hf] || 35,08 % || stabil||
|-
|}
=== [[Tantal]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Ta-180 <subsup >180</subsup >Ta] || 0,012 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Ta-181 <subsup >181</subsup >Ta] || 99,988 % || stabil||
|-
|}
=== [[Wolfram]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=W-180 <subsup >180</subsup >W] || 0,12 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=W-182 <subsup >182</subsup >W] || 26,5 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=W-183 <subsup >183</subsup >W] || 14,31 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=W-184 <subsup >184</subsup >W] || 30,64 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=W-186 <subsup >186</subsup >W] || 28,43 % || stabil||
|-
|}
=== [[Rhenium]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Re-185 <subsup >185</subsup >Re] || 37,4 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Re-187 <subsup >187</subsup >Re] || 62,6 % || stabil||
|-
|}
=== [[Osmium]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Os-184 <subsup >184</subsup >Os] || 0,02 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Os-186 <subsup >186</subsup >Os] || 1,59 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Os-187 <subsup >187</subsup >Os] || 1,96 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Os-188 <subsup >188</subsup >Os] || 13,24 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Os-189 <subsup >189</subsup >Os] || 16,15 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Os-190 <subsup >190</subsup >Os] || 26,26 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Os-192 <subsup >192</subsup >Os] || 40,78 % || stabil||
|-
|}
=== [[Iridium]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Ir-191 <subsup >191</subsup >Ir] || 37,3 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Ir-192 <subsup >192</subsup >Ir] || - % || 74 Tage || [[radioaktiv]] % || 74 Tage, Prüftechnik, Medizin
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Ir-193 <subsup >193</subsup >Ir] || 62,7 % || stabil||
|-
|}
=== [[Platin]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Pt-190 <subsup >190</subsup >Pt] || 0,014 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Pt-192 <subsup >192</subsup >Pt] || 0,782 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Pt-194 <subsup >194</subsup >Pt] || 32,967 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Pt-195 <subsup >195</subsup >Pt] || 33,832 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Pt-196 <subsup >196</subsup >Pt] || 25,242 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Pt-198 <subsup >198</subsup >Pt] || 7,163 % || stabil||
|-
|}
=== [[Gold]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Au-197 <subsup >197</subsup >Au] || 100 % || stabil||
|-
|}
=== [[Quecksilber]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Hg-196 <subsup >196</subsup >Hg] || 0,15 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Hg-198 <subsup >198</subsup >Hg] || 9,97 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Hg-199 <subsup >199</subsup >Hg] || 16,87 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Hg-200 <subsup >200</subsup >Hg] || 23,1 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Hg-201 <subsup >201</subsup >Hg] || 13,18 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Hg-202 <subsup >202</subsup >Hg] || 29,86 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Hg-204 <subsup >204</subsup >Hg] || 6,87 % || stabil||
|-
|}
=== [[Thallium]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Tl-203 <subsup >203</subsup >Tl] || 29,524 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Tl-205 <subsup >205</subsup >Tl] || 70,476 % || stabil||
|-
|}
=== [[Blei]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Pb-204 <subsup >204</subsup >Pb] || 1,4 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Pb-206 <subsup >206</subsup >Pb] || 24,1 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Pb-207 <subsup >207</subsup >Pb] || 22,1 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Pb-208 <subsup >208</subsup >Pb] || 52,4 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Pb-210 <subsup >210</subsup >Pb] || [[radioaktiv]] - % || 22,3 Jahre|| [[radioaktiv]], Uran-Reihe, Erdboden
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Pb-212 <subsup >212</subsup >Pb] || [[radioaktiv]] - % || 10,6 Stunden|| [[radioaktiv]], Thorium-Reihe, Erdboden, Luft
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Pb-214 <subsup >214</subsup >Pb] || [[radioaktiv]] - % || 26,8 Minuten|| [[radioaktiv]], Uran-Reihe, Erdboden, Luft
|-
|}
=== [[Bismut]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Bi-209 <subsup >209</subsup >Bi] || 100 % || stabil||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Bi-214 <subsup >214</subsup >Bi] || [[radioaktiv]] - % || 19,8 Minuten|| [[radioaktiv]], Uran-Reihe, Erdboden, Luft
|-
|}
=== [[Polonium]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung |- | [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Po-210 <sup>210</sup>Po] || - % || 138,4 Tage || [[radioaktiv]] * Polonium-210 wird eingesetzt, um effektiv die statische Aufladung in der Kunsstoffproduktion, früher z.B. bei Filmträgern und Schallplatten zu reduzieren. * Weniger als ein Mikrogramm Polonium könnte den Tod des russischen Journalisten Alexander Litvinenko verursacht haben, s. [http://www.chemie-im-alltag.de/articles/0089/index.html Polonium-210 - In tödlicher Mission von Prof. Oliver Reiser].
|-
|}
* [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Po alle bekannten Polonium-Isotope]
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Po- <sub></sub>Po] || % || stabil |-
=== [[Astat]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
|}
* [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=At alle bekannten Astat-Isotope]
=== [[Radon]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Rn-220 <subsup >220</subsup >Rn] || 9 % || 55 Sek|| [[radioaktiv]], Thorium-Reihe, Erdboden, Luft
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Rn-222 <subsup >222</subsup >Rn] || 90 % || 3,82 Tage|| [[radioaktiv]], Uran-Reihe, Erdboden, Luft
|-
|}
* [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Rn alle bekannten Radon-Isotope]
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Rn- <sub></sub>Rn] || % || stabil
|-
=== [[Francium]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
|}
* [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Fr alle bekannten Francium-Isotope]
=== [[Radium]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Ra-226 <subsup >226</subsup >Ra] || - % || 1600 Jahre|| [[radioaktiv]], Uran-Reihe, Erdboden
|-
|}
* [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Ra alle bekannten Radium-Isotope]
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Ra- <sub></sub>Ra] || % || stabil
|-
=== [[Actinium]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
|}
* [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Ac alle bekannten Actinium-Isotope]
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Ac- <sub></sub>Ac] || % || stabil
|-
=== [[Thorium]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Th-232 <subsup >232</subsup >Th] || ca. 100 % || 14 Milliarden Jahre|| [[radioaktiv]], Erdkruste
|-
|}
=== [[Protactinium]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Pa-231 <subsup >231</subsup >Pa] || 100 % || stabil||
|-
|}
=== [[Uran]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=U-234 <subsup >234</subsup >U] || 0,0055 % || stabil245.500 Jahre ||
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=U-235 <subsup >235</subsup >U] || 0,72 % || 0,7 Milliarden Jahre|| [[radioaktiv]], Erdkruste, Kernenergie, Atomwaffen
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=U-238 <subsup >238</subsup >U] || 99,2745 % || 4,5 Milliarden Jahre|| [[radioaktiv]], Erdkruste, Kernenergie, Atomwaffen
|-
|}
* [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=U alle bekannten Uran-Isotope]
=== [[Neptunium]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
|}
* [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Np alle bekannten Neptunium-Isotope]
=== [[Plutonium]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Pu-238 <subsup >238</subsup >Pu] || [[radioaktiv]] - % || 87,7 Jahre|| [[radioaktiv]], Kerntechnik, Isotopenbatterien
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Pu-239 <subsup >239</subsup >Pu] || - % || 24110 Jahre || [[radioaktiv]] % || 24110 Jahre, Kerntechnik, Kernwaffentechnik
|-
|}
=== [[Americium]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Am-241 <subsup >241</subsup >Am] || - % || 433 Jahre || [[radioaktiv]] % || 433 Jahre, Kerntechnik, Brandmelder, Prüftechnik
|-
|}
=== [[Curium]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
|}
* [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Cm alle bekannten Curium-Isotope]
=== [[Berkelium]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
|}
* [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Bk alle bekannten Berkelium-Isotope]
=== [[Californium]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
|}
* [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Cf alle bekannten Californium-Isotope]
=== [[Einsteinium]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
|}
* [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Es alle bekannten Einsteinium-Isotope]
=== [[Fermium]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
|}
* [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Fm alle bekannten Fermium-Isotope]
=== [[Mendelevium]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
|}
* [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Md alle bekannten Mendelevium-Isotope]
=== [[Nobelium]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
|}
* [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=No alle bekannten Nobelium-Isotope]
=== [[Lawrencium]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
|}
* [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Lr alle bekannten Lawrencium-Isotope]
=== [[Rutherfordium]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
|}
* [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Rf alle bekannten Rutherfordium-Isotope]
=== [[Dubnium]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
|}
* [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Db alle bekannten Dubnium-Isotope]
=== [[Seaborgium]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
|}
* [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Sg alle bekannten Seaborgium-Isotope]
=== [[Bohrium]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
|}
* [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Bh alle bekannten Bohrium-Isotope]
=== [[Hassium]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
|}
* [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Hs alle bekannten Hassium-Isotope]
=== [[Meitnerium]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
|}
* [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Mt alle bekannten Meitnerium-Isotope]
=== [[Darmstadtium]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
|}
* [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Ds alle bekannten Darmstadtium-Isotope]
=== [[Roentgenium]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
|}
* [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Rg alle bekannten Roentgenium-Isotope]
=== [[Ununbium]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
|}
* [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Uub alle bekannten Ununbium-Isotope]
=== [[Ununtrium ]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
|}
* [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Uut alle bekannten Ununtrium -Isotope]
=== [[Ununquadium]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
|}
* [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Uuq alle bekannten Ununquadium-Isotope]
=== [[Ununpentium]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
|}
* [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Uup alle bekannten Ununpentium-Isotope]
=== [[Ununhexium]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
|}
* [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Uuh alle bekannten Ununhexium-Isotope]
=== [[Ununseptium]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
|}
* [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Uus alle bekannten Ununseptium-Isotope]
=== [[Ununoctium]] ===
{| {{tabelle}}
! Isotop !! natürliche Häufigkeit !! [[HalbwertzeitHalbwertszeit ]]!! Herkunft, techn. Bedeutung
|-
|}
* [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Uuo alle bekannten Ununoctium-Isotope]
[[Kategorie:Chemie]]
[[Kategorie:Physik]]
Änderungen – BS-Wiki: Wissen teilen
Änderungen
6.799 Byte hinzugefügt ,
22:50, 28. Sep. 2013