Isomerism In Coordination Compounds

Optical isomerism is exhibited by complexes that are non-superimposable on their mirror images. For the given complexes: - The complex cis-[Co(en) Cl ]Cl can show optical isomerism due to the bidentate nature of ethylenediamine (en), leading to non-superimposable mirror images.
- The complex cis-[CrCl (ox) ] shows optical isomerism because of the chelation with oxalate ions.
- cis-[CoCl (en) ] also exhibits optical isomerism. However, cis-[Co(NH ) Cl ] does not show optical isomerism because of its symmetric nature with respect to the two chloride ions, which allows it to be superimposable on its mirror image.