Question

Pcl3 is known but Ncl5 is not known,why???

Answer 1

Answer:

Phosphorous has d-orbitals and hence can accomodate the electrons from Cl into them, incase of N the d-orbitals are absent and electrons can be accomodated only in p-ornitals.Hence PCl exists.

Answer 2

Phosphorous has d-orbitals and hence can accommodate the electrons from Cl into them, Incase of N the d-orbitals are absent and electrons can be accommodated only in p- ornitals. Hence PCl exists. because nitrogen is small in size since it is the first element in the 15th group

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