Where among the following metal complexes the one which exhibits optical activity is : (AA=bidentate — Coordination Compounds Chemistry Question

💡 Solution & Explanation

Step 1: Complexes with only monodentate ligands of types cis-[MA4X2] and trans-[MA4X2] possess planes of symmetry and are achiral. Step 2: Among the bis-chelated complexes, trans-[M(AA)2X2] is symmetric with a plane of symmetry. Step 3: The cis-isomer of [M(AA)2X2] lacks any plane or center of inversion because the bidentate chelates are locked into perpendicular planes, making it chiral and optically active. This corresponds to option (c).