Chemistry - Coordination Chemistry Question with Solution | TestHub

Optical isomerism requires a non-superimposable mirror image. Cis-diamminedicarbonatocobaltate(III) ion, $[Co(N{H}_3{)}_2(C{O}_3{)}_2{]}^{-}$, is an octahedral complex with a cis arrangement of ligands, making it chiral and thus optically active. Trans isomers and square planar complexes (like Pt(II)) are typically achiral.