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Q.
Which of the following has an optical isomer?
Coordination Compounds
Solution:
Optical isomerism is usually exhibited by octahedral compounds of the type $\left[M(A A)_{2} B_{2}\right],$ where $(A A)$ is a symmetrical bidentate ligand. Square planar complexes rarely show optical isomerism on account of presence of axis of symmetry. Thus among the given options, $\left[ Co (e n)_{2}\left( NH _{3}\right)_{2}\right]^{3+}$ exhibits optical isomerism.
