Chemistry - Coordination Chemistry Question with Solution | TestHub

In a d⁴ configuration, when ${\Delta }_0<P$ (weak field ligand), pairing energy is greater than crystal field splitting energy. Electrons will occupy orbitals to maximize spin multiplicity. The first three electrons go into the $t_{2g}$ orbitals. The fourth electron will then enter the $e_g$ orbitals to avoid pairing, as it requires less energy than pairing in $t_{2g}$.