Which transition metal complex exhibits optical isomerism due to the presence of three symmetrical bidentate chelating ligands?

💡 Solution & Explanation

The complex tris(ethylenediamine)cobalt(III) exhibits optical isomerism because it contains three symmetrical bidentate chelating ligands that create a chiral octahedral geometry lacking any plane or center of symmetry. Complexes with monodirectional ligands like ammonia or square planar geometries generally do not form non-superimposable optical enantiomers in the same manner. This chiral complex can rotate plane-polarized light.