<span style="font-family:monospace; font-size:90%;vertical-align: sub"> +III &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;+I &nbsp; -I</span> '''<bigbr><span style="line-height:1.0em; font-family:monospace; font-size:180%; vertical-align: super; letter-spacing:0.1em">Fe³⁺, NaH, H₃O⁺, KMnO₄, CrO^2-₄, Cr₂O^2-₇, KClO₃, SO₂^2-₃<br><br></bigspan><br>'''