Which one of the following about compounds of lithium is false –
(A) The hydroxide, carbonate, nitrate decomposed to give the oxide on heating
(B) It is the most electronegative element of group IA
(C) The hydrogen carbonate cannot be isolated as a stable solid
(D) It forms a superoxide
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(D). Lithium forms an oxide , but not the peroxide or super oxide, because strong polarising power of small sized ion is strong enough to restrict the oxidation of an oxide ion to the peroxide ion, .