The mental that does not give superoxide is

Which alkali metal does not form peroxide and superoxide?

Which pair of elements on combustion in air give superoxides ?

The calculated bond order in superoxide ion is :

Oxidation state of oxygen atom in potassium superoxide is

The stability of peroxide and superoxide of alkali metals increase as we go down to group. Explain giving reason.

The stability of peroxide and superoxide of alkali metals increase as we go down to group. Explain giving reason.