What is meant by crystal field splitting energy ? On the basis of crystal field theory, write the electronic configuration of d^(4) in terms of t_(2g) and e_(g) in an octahedral field when Delta_(0)gtP

What is meant by crystal field splitting energy ? On the basis of crys

1.	What is meant by crystal field splitting energy ? On the basis of crystal field theory, write the electronic configuration of d^(4) in terms of t_(2g) and e_(g) in an octahedral field when Delta_(0)gtP
Answer» Solution :The five d-orbitals in a metal ion are degenerate (of equal energy). But when ligands approach the central metal ion, they experience repulsions. The d-orbitals are SPLIT into two groups consisting of three orbitals called `t_(2G)` orbitals and two orbitals called `e_(g)` orbitals. the `e_(g)` orbitals possess greater energy than`t_(2g)` orbitals. Till there are three electrons, they will occupy three `t_(2g)` orbitals singly. If there are 4 electrons in d-orbitals i.e., `d^(4)` configuration, two CASES ARISE. If `Delta_0 GT P`, then the fourth electron will go to `t_(2g)` orbital, the electronic configuration will be `t_(2g)^(4)e_(g)^(0)` .