Question

Which of the following complex ion is optically active?

• A. $\left[Co\right(en\left)\right(H_{2}O{)}_4{]}^{2+}$
• B. $\left[Co\right(en{)}_2(N{H}_3{)}_2{]}^{2+}$
• C. $\left[Co\right(CO{)}_4\left(en\right){]}^{3+}$
• D. $\left[Co\right(H_{2}O{)}_{3}B{r}_3{]}^{3+}$

Answer 1

The correct option is D $\left[Co\right(H_{2}O{)}_{3}B{r}_3{]}^{3+}$

Complex $\left[Co\right(en{)}_2(N{H}_3{)}_2{]}^{2+}$ has an optically active isomer. Rest are optically inactive.