If you are talking about the oxidation state of manganese, it can have an oxidation number between 1 and 7, inclusive. That means there are some compounds with the Mn+1, Mn+2, Mn+3, Mn+4, Mn+5, Mn+6,...
Manganese is 1s22s22p63s23p64s23d5 or [Ar]4s23d5 in the shortened form. Maganese is stable in a large number of oxidation states. Manganese 4+ would be [Ar]4s23d1 and Manganese 2+ would be [Ar]4s23d3...
2Mn^2+ + 5IO4^- + 3H2O --> 2MnO4^- + 5IO3^- + 6H^+
ok so imagine the every time i wrote a ^ the thing after it is a super script and also that only numbers at the start of a...