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Q.
Type(s) of isomerism shown by the complex $\left[Co \left(en\right)_{2} \left(Cl\right)_{2}\right]Br \, $ is
NTA AbhyasNTA Abhyas 2022
Solution:
$\left[\right.Co\left(en\right)_{2}Cl_{2}\left]\right.Br\overset{ \text{Ionisation} }{ \rightarrow }\left[\right.Co\left(en\right)_{2}ClBr\left]\right.Cl$
cis-isomer is optically active. Optical isomerism occurs when a molecule is not superimposable with its mirror image. Structural isomers have the same chemical composition but the bonds are different.