What is the correct name for the ionic compound, MnO2?

? manganese dioxide
? manganese(IV) oxide
? manganese(II) oxide
? manganous oxide
? manganese(I) oxide

1 answer

The correct name for the ionic compound MnO2 is manganese(IV) oxide. This is because manganese has a +4 oxidation state in this compound, as indicated by the subscript 2 for oxygen, which has a -2 charge. Thus, you have Mn in the +4 state to balance the two -2 charges from oxygen.