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+1 vote
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Beryllium and aluminium exhibit many properties which are similar. But the two elements differ in

(a) maximum covalency in compounds

(b) exhibiting amphoteric nature in their oxides

(c) forming covalent halides

(d) forming polymeric hydrides.

1 Answer

+2 votes
by (76.3k points)
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Best answer

Correct option (a) maximum covalency in compounds

Explanation: 

Be exhibits maximum covalency of four whereas Al shows maximum covalency of six.

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