Question

Which of the following statement is incorrect about the complex $\left[Co\right(en)C{l}_{2}BrI{]}^{-}$?
(Given: $en\to \text{ethylenediamine}$)

• A. It has 4 geometrical isomers
• B. It has 6 stereoisomers
• C. Its four isomers are optically active
• D. Its four isomers are optically inactive

Answer 1

The correct option is D Its four isomers are optically inactive

For $\left[M\right(AA\left)a_{2}bc\right]$
Total $G.I\to 4$
$\text{Total stereoisomers}\to 6$
$\text{Optically active}\to 4$
$\text{Optically inactive}\to 2$