Which one of the following is expected to exhibit optical isomerism? [en = ethylenediamine]
(a) trans- [Co(en)2Cl2]
(b) cis- [Pt(NH3)2Cl2]
(c) cis-[Co(en)2Cl2]
(d) trans-[Pt(NH3)2Cl2]
Correct Option (c) cis-[Co(en)2Cl2]
Explanation: