Question

The number of possible optical isomers for the complexes $\left[M{A}_2{B}_2\right]$ with $s{p}^3$ or $ds{p}^2$ hybridized metal atom, respectively, is:
Note: A and B are unidentate neutral and unidentate monoanionic ligands, respectively.

• A. 0 and 1
• B. 2 and 2
• C. 0 and 0
• D. 0 and 2

Answer 1

The correct option is C 0 and 0

Case 1: If M is $s{p}^3$ hybridized, the geometry will be tetrahedral. There will be a plane of symmetry and thus it does not show optical activity.

Case 2: If M is $ds{p}^2$ hybridized, the geometry will be square planar. Due to the presence of a plane of symmetry, it does not show optical activity.