Q. 29 Why are low spin tetrahedral complexes not formed?

In tetrahedral compiex, the d-orbital is splitting to small as compared to octahedral, For

Same metal and same ligand ${∆}_{t}=\frac{4}{9}{∆}_{0}$

Hence, the orbital splitting energies are not enough to force pairing. As a result, low spin

configurations are rarely observed in tetrahedral complexes.