Name the alkali metals , why is lithium regarded as most apt reducing agent in aqueous solutions?

Name the alkali metals , why is lithium regarded as most apt reducing

1.	Name the alkali metals , why is lithium regarded as most apt reducing agent in aqueous solutions?
Answer» Solution :SINCE smaller cations` (Li^(+) , Na^(+))` stabilize smaller anions `(O^(2-))` and bigger cations `(K^(+) , Rb^(+)` and `Cs^(+)`) stabilize bigger anions `(O_(2)^(-))` , therefore, Li and Na form only oxides when HEATED in AIR but K , Rb and Cs FORMS SUPEROXIDES .