Discussion Forum



1)

Which of the following complex species is not expected to exhibit optical isomerism?


A) $[Co(en)_{2}]^{3+}$

B) $[Co(en)_{2}Cl_{2}]^{+}$

C) $[Co(NH_{3})_{3}Cl_{3}]^{}$

D) $[Co(en)(NH_{3})Cl_{2}]^{+}$

Answer:

Option C

Explanation:

Optical isomerism is exhibited by only those complexes which lack elements of symmetry.

 [Co(NH3)3Cl3] shows facial s wellas meridional isomerism . But both forms contain a plane of symmetry. Thus, this complex does not exhibit optical isomerism.