Question

pcl5 is known but Ncl5 is not known why​

Answer 1

Answer:

phosphorus has d orbitals and hence can accommodate electron while N d orbitals are absent and electrons can be accommodated only in p orbitals. hence pcl 5 is exist

Answer 2

Phosphorous has d-orbitals & hence

can accommodate the electrons

from Cl into them,in case of N the

d-orbitals are absent & electrons can be

accommodated only in p-orbitals.Hence

PC15 exists.