The Total solution for NCERT class 6-12
What isspectrochemical series? Explain the difference between a weak field ligand anda strong field ligand.
Aspectrochemical series is the arrangement of common ligands in the increasingorder of their crystal-field splitting energy (CFSE) values. The ligandspresent on the R.H.S of the series are strong field ligands while that on theL.H.S are weak field ligands. Also, strong field ligands cause higher splittingin the d orbitals than weak field ligands.
I−< Br− < S2− − < Cl−3 < F− − < C2O42− ∼ H2O< NCS− ∼ H− − < NH3 < en ∼SO32− < NO2− < phen < CO