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Question

PCl5 is formed but NCl5 is not.

A
True
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B
False
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Solution

The correct option is A True
NCl5 does not exist because there are no d orbitals in the second energy level in nitrogen atom.
Therefore there is no way to arrange five pairs of bonding electrons around the Nitrogen atom.
PCl5
forms five bonds by using the d orbitals to "expand the (octet)"
and have more places to put Bonding pair of phosphoryl chloride.

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