Nitrogen does not form pentahalides. Give reason.

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Solution

$N i t r o g e n$ does not form pentahalides.
The electronic configuration of $n i t r o g e n$ is $1 s^{2} 2 s^{2} 2 p^{3}$ .
It has 5 valence electrons. In the valence shell, it has s and p orbitals. $N i t r o g e n$ does not has vacant d orbitals. It cannot expand its octet. In other words, it cannot have more than 8 valence electrons. Hence, $n i t r o g e n$ cannot be pentavalent .

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