Question

The stability of $K_{2}O$,$K_2{O}_2$ and $K{O}_2$ is in order $K_{2}O<K_2{O}_2<K{O}_2$. The increasing stability at the size of metal ion increases is due to stabilization of :

• A. larger cation by smaller anions through lattice energy effects.
• B. larger cation by larger anions through lattice energy effects.
• C. smaller cations by smaller anions through m.p.
• D. smaller cations by larger anions through m.p.

Answer 1

The correct option is B larger cation by larger anions through lattice energy effects.

Increase in the size of the cations, the stability increases.

This is due to the stabilization of the larger cation with larger anion due to lattice energy effects.