Question

write the oxides metal limit and excess of K,Na​

Answer 1

Answer:

Oxides of K is K2O

Oxide of Na is Na2O

Answer 2

With excess oxygen, the alkali metals can form peroxides, M2O2, ... 2Na (s) + O2(g) → Na2O2(s). The rest of the group, K, Rb, Cs, and Fr, forms the superoxides.