Which of the following does not show optical isomerism? (en = ethylenediamine)

Question

Which of the following does not show optical isomerism?

(en = ethylenediamine)

[Co(NH₃)₃Cl₃]⁰

[Co(en)Cl₂(NH₃)₂]⁺

[Co(en)₃]³⁺

[Co(en)₂Cl₂]⁺

Please login to view the detailed solution steps...