Which elements among 3d– transition elements, exhibit the highest oxidation state?
The electronic configuration of manganese is [Ar]4s2,3d5[Ar]4s2,3d5 . In the d-subshell of manganese, there are the most unpaired electrons (55 electrons). As a result, manganese has the most oxidation states, spanning from+2+2 to+7+7.
