question_answer

Which one of the following complexes will have four different isomers?

A) \[[Co{{(en)}_{2}}C{{l}_{2}}]\,Cl\]        

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

C) \[[Co{{(PP{{h}_{3}})}_{2}}C{{l}_{2}}]\,Cl\]

D) \[[Co{{(en)}_{3}}]\,C{{l}_{3}}\]

Correct Answer: B

Solution :

[b] Complex \[Co(en){{(N{{H}_{3}})}_{2}}C{{l}_{2}}]Cl\] will have four different isomers. (i) Geometrical isomers   (ii) Optical isomers