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  4. Which of the following coordination compounds would exhibit optical isomerism ?

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Q. Which of the following coordination compounds would exhibit optical isomerism ?

NTA AbhyasNTA Abhyas 2022

Solution:

$\left[\text{M} \text{a}_{5} \text{b}\right]^{+ \text{n}} \rightarrow $ no orbital activity
$\left[\text{M} \text{a}_{2} \text{b}_{2}\right]^{+ \text{n}} \rightarrow $ plane of symmetry
trans- $\left(\left[\text{M} \left(\text{AA}\right)_{2} \left(\text{b}\right)_{2}\right]\right)^{+ \text{n}} \rightarrow $ plane of symmetry
Solution
Enantiomers exist in $\left(\left[\text{M} \left(\text{AA}\right)_{3}\right]\right)^{+ \text{n}}$