question_answer

In which of the following pairs both the complexes show optical isomerism [AIIMS 2005]

A) cis-\[{{[Cr{{({{C}_{2}}{{O}_{4}})}_{2}}C{{l}_{2}}]}^{3-}}\], cis-\[[Co{{(N{{H}_{3}})}_{4}}C{{l}_{2}}]\]

B) \[[Co{{(en)}_{3}}]C{{l}_{3}}\], cis-\[[Co{{(en)}_{2}}C{{l}_{2}}]Cl\]

C) \[[PtCl(dien)]Cl\], \[{{[NiC{{l}_{2}}B{{r}_{2}}]}^{2-}}\]

D) \[[Co{{(N{{O}_{3}})}_{3}}{{(N{{H}_{3}})}_{3}}]\], cis-\[[Pt{{(en)}_{2}}C{{l}_{2}}]\]

Correct Answer: B

Solution :

\[\left[ Co{{\left( en \right)}_{3}} \right]C{{l}_{3}}\] \[cis-\left[ Co{{\left( en \right)}_{2}}C{{l}_{2}} \right]Cl\]