Why does a tetrahedral complex of the type MA2B2 not show geometrical isomerism?

Answer 1

For Geometrical isomerism the free rotation about the bonds should be restricted so a double bonded or cyclic compound may show the geometrical isomerism.

Answer 2

A tetrahedral complex of the type MA2B2 does not show geometrical isomerism because the ligands are the same and located in identical positions relative to the metal center, resulting in the same spatial arrangement. Geometrical isomerism arises when there is restricted rotation around a bond, leading to different spatial arrangements of ligands.