Which of the following metal ions form the stable superoxide?

Options

A. `Li^(+)`
B. `Mg^(2+)`
C. `Na^(+)`
D. `K^(+)`

Answer

D

Explanation

A superoxide is a compound that contains the superoxide anion, which has the chemical formula `O_(2)^(-)`, Alkali metal oxides, the superoxide of `K^(+), Rb^(+) " and "Cs^(+)` form when these metals reacts, so rapidly with oxygen, these are stable superoxides, in which the alkali metal reacts with `O_(2)` in 1 : 1 mole ratio.