question_answer

Which of the following configuration have crystal field splitting energy as zero with low field as well as high field ligand?

A)  \[{{d}^{4}}\]             

B)  \[{{d}^{6}}\]

C)  \[{{d}^{8}}\]             

D)  \[{{d}^{10}}\]

Correct Answer: D

Solution :

The gain in energy achieved by preferential filling up of orbitals by electrons is known as crystal field stabilization energy. Greater the amount of crystal field stabilization energy of the complex, greater is its stability. So fully filled d-orbital has crystal field splitting energy as zero with low field as well as high field ligand. for \[{{d}^{4}}\] for \[{{d}^{6}}\] for high field \[CFSE=0\] \[CFSE\ne 0\] for \[{{d}^{8}}\] for \[{{d}^{10}}\] For low as well as high field ligand CFSE, zero because all the electrons are paired.