Question

The oxidation states of most electronegative element in the products of reaction between bao2 and h2so4

Answer 1

The products are H2O2 and BaSO4. The general order of highest electronegativity is F O N Cl

(remember this. I remember it as a combination of fun uncle)

Oxygen is the most EN element here it's -1 in H2O2 and -2 in BaSO4