Question

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

• A. [Co(en)3]3+
• B. [Co(en)2Cl2]+
• C. [Co(NH3)3Cl3]
• D. [Co(en)(NH3)2Cl2]+

Answer 1

Answer: (C)

$Co(NH3)3Cl3$

Answer 2

[Co(NH3)3Cl3] show facial as well as meridional isomerism. But both contain plane of symmetry.

So, the answer is (3)