In the context of beryllium, which one of the following statements is incorrect?

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It is rendered passive by nitric acid.

Its salts rarely hydrolyse

Its hydride is electron-deficient and polymeric.

It forms ${Be}_{2} C$

answer is C.

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Detailed Solution

Beryllium salts are covalent and get readily hydrolysed.
(1) Be is not soluble in dilute or cold HNO3, but readily dissolves in hot concentrated HNO₃.
(2) Be forms Be₂C.
(4) (BeH₂)n is polymeric and electron deficient.

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