Question

Amphoteric oxide(s) of Mn is/are:

• A. $Mn{O}_2$
• B. $M{n}_3{O}_4$
• C. $M{n}_2{O}_7$
• D. $MnO$

Answer 1

Answer: (A), (B)

$M{n}_3{O}_4$

Amphoteric oxides are oxides that behave as both acidic and basic oxides. Amphoteric oxides have features of acidic as well as basic oxides that neutralise both acids and bases.

Oxides in the lower oxidation state are basic and in higher oxidation state, they are acidic. In the intermediate state they are amphoteric.