s-Block ElementsHard

Question

Be and Al resemble in :

Options

A.both become passive on reaction with HNO3 due to formation of oxide layer.   
B.their chlorides are Lewis acids.
C.chlorides exist in polymeric form.
D.chlorides exist in polymeric form.

Solution

Beryllium the first member of the Group 2 metals, shows anomalous behavior as compared to magnesium and rest of the members. Further, it shows diagonal relationship to aluminium. All statements are correct because they show diagonal relationship.

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