1.

In case of nitrogen, NCl_(3) is possible but not NCI_5 gwhile in case of phosphorous, PCl_3 as well as PCI_5 IM are possible. It is due to

Answer»

Availability of VACANT d-orbital in P but not in N
Lower electronegativity of P than N
Occurrence of P in SOLID while N in gaseous state at ROOM temperature
Occurrence of P in solid while N in gaseous PREL T state at room temperature

Solution :Nitrogen does not have d-orbitals.


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