JEE Main 2004 Chemistry question

Chemistry Classification of Elements and Periodicity in Properties JEE Main 2004

Beryllium and aluminium exhibit many properties which are similar. But the two elements differ in

(1)exhibiting maximum covalency in compoundCorrect
(2)exhibiting amphoteric nature in their oxides
(3)forming covalent halides
(4)forming polymeric hydrides

Answer: (1)

Solution

By the diagonal relationship Be and Al both have amphoteric oxides, covalent halides and polymeric hydrides. But Be (no d-orbitals in its valence shell, n =

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Question ID VK-038390