Larger cations are stabilized by larger anions due to higher lattice energies.The anion sizes in increasing order are oxide < peroxide < superoxide, so lithium forms the most stabl...
Oxides: Stability decreases down the group with lithium oxide the most stable.
Peroxides: Increases and then decreases as we go from top to bottom in the group with sodium peroxide...
As the size of alkali metal ion increases the stability of peroxides and super oxides increases. This is due to the stabilization of larger anions by larger cations. As we move fro...
Oxides: Stability decreases down the group with lithium oxide the most stable.
Peroxides: Increases and then decreases as we go from top to bottom in the group with sodium peroxide...