The magnitude of crystal field stabilisation energy (CFSE of `Delta_(1)`) in tetrahedral complexes is considerably less than that in the octahderal field. Because

Options

A. There are only four ligands instead of six so the ligand field is only 2/3 the size hence the `Delta_(t)` is only 2/3 the size
B. The direction of the orbitals does not coincide with the direction of the ligands. This reduces the crystal field stabilization energy `(Delta_(t))` by further 2/3
C. Both points (a) and (b) are correct
D. Both points (a) and (b) are wrong

Answer

C

Explanation

CFSE in case of tetrahedral complexes is less than the octahedral field due to the points (a) and (b).