JEE MAIN - Chemistry (2004 - No. 44)
Beryllium and aluminium exhibit many properties which are similar. But the two elements
differ in :
exhibiting maximum covalency in compound
exhibiting amphoteric nature in their oxides
forming covalent halides
forming polymeric hydrides
Explanation
The maximum valency of beryllium is $$+2$$ white that of aluminium is $$+3.$$
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