Question

Which of the following complex does not show optical isomerism ?

• A. $Cis\left[Pt\right(Br{)}_2(en{)}_2{]}^2$
• B. $\left[Cr\right(C_2{O}_4{)}_3{]}^{3-}$
• C. $\left[CrC{l}_2\right(N{H}_3{)}_{2}en{]}^{+}$
• D. $\left[Cr\right(N{H}_3{)}_{4}S{O}_4{]}^{+}$

Answer 1

The correct option is D $\left[Cr\right(N{H}_3{)}_{4}S{O}_4{]}^{+}$

Presence of atleast one bidentate ligand is an essential condition for exhibiting optical isomerism. Among the given complexes, $\left[Cr\right(N{H}_3{)}_{4}S{O}_4{]}^{+}$ is the complex in which no bidentate ligand is present. That's why it does not exhibit optical isomerism.

Note: en and ox $\left(C_2{O}_4^{2-}\right)$ are bidentatellgands.

Hence, option D is correct.