Q.

Number of complexes which show optical isomerism among the following is _____.                        [2024]

Cis-[Cr(ox)2Cl2]3-,[Co(en)3]3+,cis-[Pt(en)2Cl2]2+,cis-[Co(en)2Cl2]+,trans-[Pt(en)2Cl2]2+,trans-[Cr(ox)2Cl2]3-


Ans.

(4)

cis-[Cr(ox)2Cl2]3-,  cis-[Pt(en)2Cl2]2+,  cis-[Co(en)2Cl2]+ and  [Co(en)3]3+ are optically active

trans-[Pt(en)2Cl2]2+,trans-[Cr(ox)2Cl2]3- are optically inactive