Question

valency of zinc peroixde\

Answer 1

valency of zinc peroixde is +2

Answer 2

Valency of zinc in zinc oxide is +4

Zinc peroxide = $\mathfrak{ZnO2}$

Zn O

2 1

Oxygen's valency is always 2.

So multiply it with 2

Zn O

2×2 1×2

Valency of Zinc = 4

Valency of oxygen = 2