Which one of the following statements about compounds of lithium is false?

Question

Which one of the following statements about compounds of lithium is false? (A) The hydroxide, carbonate, nitrate decompose 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 an per oxide but not a superoxide

Tardigrade Admin · Accepted Answer

Lithium forms an oxide Li 2 O, but not the peroxide or super oxide, because strong polarising power of small sized Li + ion is strong enough to restrict the oxidation of an oxide ion O 2- to the peroxide ion, O 22-.

Q. Which one of the following statements about compounds of lithium is false?

The hydroxide, carbonate, nitrate decompose to give the oxide on heating

It is the most electronegative element of group IA

The hydrogen carbonate cannot be isolated as a stable solid

It forms an per oxide but not a superoxide

Lithium forms an oxide $L i_{2} O$ , but not the peroxide or super oxide, because strong polarising power of small sized $L i^{+}$ ion is strong enough to restrict the oxidation of an oxide ion $O^{2 -}$ to the peroxide ion, $O_{2}^{2 -}$ .

Q. Which one of the following statements about compounds of lithium is false?

The hydroxide, carbonate, nitrate decompose to give the oxide on heating

It is the most electronegative element of group IA

The hydrogen carbonate cannot be isolated as a stable solid

It forms an per oxide but not a superoxide

Lithium forms an oxide Li2​O, but not the peroxide or super oxide, because strong polarising power of small sized Li+ ion is strong enough to restrict the oxidation of an oxide ion O2− to the peroxide ion, O22−​.

Lithium forms an oxide $L i_{2} O$ , but not the peroxide or super oxide, because strong polarising power of small sized $L i^{+}$ ion is strong enough to restrict the oxidation of an oxide ion $O^{2 -}$ to the peroxide ion, $O_{2}^{2 -}$ .