Question

Nitrogen does not form pentahalide because :
(1) Its size is small
(ii) Its ionisation potential is high
(iii) 'd' orbital is not available
(iv) None of these
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Answer 1

It's ionisation potential is high

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Answer 2

answer is (iii)

Nitrogen can't form pentahalide because it's electronic configuration is [Ar]2s2 2p3.

As it doesn't have any d orbital, it can't form pentahalide.

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