| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=K-39 <sub>39</sub>K] || 93,2581 % || stabil
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=K-40 <sub>40</sub>K] || 0,0117 % || stabil |- | [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=K-40 <sub>40</sub>K] || [[radioaktiv]] % || 1,27 Milliarden Jahre
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=K-41 <sub>41</sub>K] || 6,7302 % || stabil
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Tc-98 <sub>98</sub>Tc] || - % || 6,6 Millionen Jahre
|-
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Tc-99m <sub>99m</sub>Tc] || - % || stabil
|-
|}
* [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Tc alle bekannten Technetium-Isotope]
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Tc- <sub></sub>Tc] || % || stabil
|-
=== [[Ruthenium]] ===
{| {{tabelle}}
|}
* [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Uuo alle bekannten Ununoctium-Isotope]
| [http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Tc-98 <sub>98</sub>Tc] || - % || 6,6 Millionen Jahre
|-
[[Kategorie:Chemie]]
[[Kategorie:Physik]]
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