Superoxide of potassium is

The ore of potassium is

Explain the following: (a) KO_2 is paramagnetic. (b) Lithium forms oxide, sodium forms peroxide while potassium and rubidium form superoxides. (c) BaO is soluble but BaSO_4 is insoluble in water.

The stability order of oxide, peroxide and superoxide of alkalimetal is

Potassium crystallizes is a bcc lattice the coordination number of potassiium in potassium metal is

Write the formula of oxide, superoxide and peroxide of caesium.

Assertion : Superoxides of alkali metals are paramagnetic. Reason : Superoxides contain the ion O_(2)^(-) which has one unpaired electron.