In case of nitrogen, NCl3 is possible but not NCl5 while in case of phosphorus, PCl3 as well as PCl5 are possible.
In case of nitrogen, NCl3 is possible but not NCl5 while in case of phosphorus, PCl3 as well as PCl5 are possible. It is due to
(a) availability of vacant d orbitals in P but not in N
(b) lower electronegativity of P than N
(c) lower tendency of Hbond formation in P than N
(d) occurrence of P in solid while N in gaseous state at room temperature.
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(a) : 7N = 1s2 2s2 3p3
15P = 1s2 2s2 2p6 3s2 3p3
In phosphorus the 3dorbitals are available.
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