Chemistry - Complete s-block Question with Solution | TestHub

In peroxides oxidation number of oxygen is -1, in superoxide it is$-\frac{1}{2}$and in oxides it is -2.
Here$\mathrm{B}\mathrm{a}{\mathrm{O}}_2$is peroxide,$\mathrm{K}{\mathrm{O}}_2$is superoxide and$\mathrm{N}{\mathrm{O}}_2$,$\mathrm{M}\mathrm{n}{\mathrm{O}}_2$are oxides.