1.

In case of nitrogen, NCl_(3) is possible but not NCl_(5) while in case of phosphorous, PCl_(5) as well as PCl_(5) are possible. It is due to

Answer»

Availability of vacant d-orbital in P but not in N
Lower electronegativity of P than N
Lower tendency of H bond formation in P than N
Occurrence of P in SOLID while N in GASEOUS STATE at room temperature

Answer :A


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