Question

In case of nitrogen,NCl₃ is possible but no NCl₅ while in case of phosphorus, PCl₃ as well as PCl₅ are possible. It is due to :

(A) availability of vacant d-orbital in P but not in N.

(B) lower electro negativity of P then N.

(C) lower tendency of H bond formation in P than N.

(D) occurrence of P in solid while N in gaseous

state at roomtemperature.

Answer 1

Correct Answer is (A) availability of vacant d-orbital in P but not in N.

In phosphorous the vacant 3 d-orbitals are available.So it can increase its covalence beyond three.