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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)ltP |
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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)ltP` the fourth electron will go to `e_(g)` orbital, the electronic configuration will be `t_(2g)^(3)e_(g)^(1)` |
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