Q. Which of the following has on optical isomer?
A) $\left\lbrack Co\left( {NH}_{3} \right)_{3}Cl \right\rbrack^{+}$
B) $\left\lbrack Co(en)\left( {NH}_{3} \right)_{2} \right\rbrack^{2 +}$
C) $\left\lbrack Co\left( H_{2}O \right)_{4}(en) \right\rbrack^{3 +}$
D) $\left\lbrack Co(en)_{2}\left( {NH}_{3} \right)_{2} \right\rbrack^{3 +}$
Explanation
(d)
Cis- form of $\left\lbrack Co(en)_{2}\left( {NH}_{3} \right)_{2} \right\rbrack^{3 +}$ is optically active.
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Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.