Question

Which of the following has an optical isomer?
(en=ethylenediamine)

• A. $\left[Zn\right(en\left)\right(NH)3{)}_2{]}^{2+}$
• B. $\left[Co\right(en{)}_3{]}^{3+}$
• C. $\left[Co\right(H_{2}O{)}_4\left(en\right){]}^{3+}$
• D. $\left[Zn\right(en{)}_2{]}^{2+}$

Answer 1

The correct option is B $\left[Co\right(en{)}_3{]}^{3+}$

Optical isomers - Those compound which has the same molecular formula but a different structure is known as optical isomers.

Among these option, tris(ethylenediamine)Cobalt($III$ )chloride shows optical isomers.

Hence, option B is the correct answer.