Question

Valency of the metal atom with respect to oxygen is maximum in options a.Mn2O7 b.OsO4 c.MnO2 d.CrO3

Answer 1

Hi there,

Option A is the correct answer.

Answer 2

Mn2O7 is correct answer because according to gris cross method Mn7O2 among all options according to this method 7 is highest. therefore first option