why lithium only forms normal oxide , sodium forms peroxides and other metal forms superoxides - Chemistry - The s-Block Elements

Question

why lithium only forms normal oxide , sodium forms peroxides and
other metal forms superoxides?????

Chandra Prakash · Accepted Answer

The atomic size of
lithium is very small therefore it can form bond with one oxygen
atom As the size of atom increases, its holding capacity also
increases Therefore Sodium can form peroxide besides oxide and
Potassium forms superoxide besides oxide and peroxide

why lithium only forms normal oxide , sodium forms peroxides and other metal forms superoxides?????