Verified Solution • 2025–26 Session moderate

QJEEM24Ch642b: JEE Main 2024 Chemistry - Class 12 JEEM24Ch642b Solution: Number of complexes which show optical isomerism among the…

Number of complexes which show optical isomerism among the following is ________.

 cis- [Cr(ox)2Cl2]3−,[Co(en)3]3+, cis- [Pt(en)2Cl2]2+, cis- [Co(en)2Cl2]+,trans- [Pt(en)2Cl2]2+, trans- [Cr(ox)2Cl2]3−\text { cis- }\left[\mathrm{Cr}(\mathrm{ox})_2 \mathrm{Cl}_2\right]^{3-},\left[\mathrm{Co}(\text {en})_3\right]^{3+}, \text { cis- }\left[\mathrm{Pt}(\text {en})_2 \mathrm{Cl}_2\right]^{2+}, \text { cis- }\left[\mathrm{Co}(\text {en})_2 \mathrm{Cl}_2\right]^{+}, \text {trans- }\left[\mathrm{Pt}(\text {en})_2 \mathrm{Cl}_2\right]^{2+}, \text { trans- }\left[\mathrm{Cr}(\mathrm{ox})_2 \mathrm{Cl}_2\right]^{3-}

Step-by-Step Verified Solution

cis −[Cr(ox)2Cl2]3−→-\left[\mathrm{Cr}(\mathrm{ox})_2 \mathrm{Cl}_2\right]^{3-} \rightarrow can show optical isomerism (no POS & COS)

[Co(en)3]3+→ can show (no POS & COS) 

 cis −[Pt(en)2Cl2]2+→\text { cis }-\left[\mathrm{Pt}(\mathrm{en})_2 \mathrm{Cl}_2\right]^{2+} \rightarrow can show (no POS & COS)

 cis −[Co(en)2Cl2]+→\text { cis }-\left[\mathrm{Co}(\mathrm{en})_2 \mathrm{Cl}_2\right]^{+} \rightarrow can show (no POS & COS)

trans⁡−[Pt(en)2Cl2]2+→\operatorname{trans}-\left[\mathrm{Pt}(\mathrm{en})_2 \mathrm{Cl}_2\right]^{2+} \rightarrow can't show (contains POS & COS)

 trans −[Cr(ox)2Cl2]3−→\text { trans }-\left[\mathrm{Cr}(\mathrm{ox})_2 \mathrm{Cl}_2\right]^{3-} \rightarrow can't show (contains POS & COS)

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