Question

The. Formula of manganese dioxide is MnO2 but valency of Mn is 4 and O is 2then formula should be Mn2O4, plz give answer with Criss cross diag.

Answer 1

Explanation:

What is the formula for MnO2?

MnO₂

मैंगनीज डाइऑक्साइड/सूत्र

Oxido-oxo-(oxomanganiooxy)manganese | Mn2O4- - PubChem.

Answer 2

It is customary to use the smallest possible numbers in emperical formulae, so not Mn₂O₄ but MnO₂ because all proportions in the first formula can be divided by 2.