Question

similarly find the oxidation no. of Mn in Mn O2,Mn 2 O3 and Mn 2 O7​

Answer 1

Answer:

What is the oxidation number of Mn in Mn o2?

-4

Since there are 2 oxide ions, the total oxidation number for the oxide is -4 . Since the sum of the oxidation numbers must be 0 , the oxidation number of the manganese cation is +4 . Therefore, MnO2 is the ionic compound manganese(IV) oxide.