Q. In which of the following pairs both the complex show optical isomerism?
A) $Cis$-$\left\lbrack Cr\left( C_{2}O_{4} \right)_{2}Cl_{2} \right\rbrack^{3 -};cis$-$\lbrack Co\left( NH_{3} \right)_{4}Cl_{2}\rbrack$
B) $\lbrack PtCl(dien)\rbrack Cl,\ \left\lbrack NiCl_{2}Br_{2} \right\rbrack^{2 -}$
C) $\left\lbrack Co\left( NO_{3} \right)_{3}\left( NH_{3} \right)_{3} \right\rbrack,cis$-$\lbrack Pt(en)_{2}Cl_{2}\rbrack$
D) $\left\lbrack Co(en)_{3} \right\rbrack Cl_{3},cis$-$\lbrack Co(en)_{2}Cl_{2}\rbrack Cl$
Explanation
(d)
$\lbrack Co(en)_{3}Cl_{3}\ ie,\ \left\lbrack Co(en)_{3} \right\rbrack^{3 +}$
[image:9_image154.emf]
$cis\left\lbrack Co(en)_{2}Cl_{2} \right\rbrack Cl\ ie,\ cis\ \left\lbrack Co(en)_{2}Cl_{2} \right\rbrack^{+}$
[image:9_image155.emf]
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.