1.

Assertion : The covalence of nitrogen in N_(2)O_(5) is 5 Reason : Nitrogen can expand its covalence beyond 4.

Answer»

If both assertion and REASON are true and reason is the correct EXPLANATION of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.

Solution :Structure of `N_(2)O_(5)` is

Hence, it forms 4 covalent bonds with oxygen. It cannotexpand its covalence beyond 4 DUE to the non-availabilityof d-orbital.


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