Question

Why is geometrical isomerism not possible in
tetrahedral complexes having different types of unidentate
ligands coordinated with the central metal ion ?​

Answer 1

Answer:

Tetrahedral complexes do not show geometrical isomerism because the relative positions of the unidentate ligands attached to the central metal atom are the some with respect to each other. Coordination number of a metal ion is also equal to the total number of coordinate bonds present in a complex.

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Answer 2

Answer

1) For geometrical isomerism, the relative position of unidentate ligands attached to central metal atom shall be unequal.

2) In case of tetrahedral complex, the positons of the unidentate ligands are identical with respect to each other and hence  show optical isomerism and not geometric.