Which of the following does not show optical isomerism?
Show Hint
Cis-[CrCl$_2$(C$_2$O$_4$)$_2$]$^{3-}$
- [PtCl$_2$(en)$_2$]$^{2+}$
- [Co(NH$_3$)$_3$(NO$_2$)$_3$]
- [Co(en)$_3$]$^{3+}$
The Correct Option is C
Solution and Explanation
Step 1: Checking for optical isomerism.
- Optical isomerism occurs in complexes with chiral centers or asymmetric arrangements.
- Cis-[CrCl$_2$(C$_2$O$_4$)$_2$]$^{3-}$ can show optical isomerism due to asymmetric bidentate ligands.
- [PtCl$_2$(en)$_2$]$^{2+}$ and [Co(en)$_3$]$^{3+}$ also show optical isomerism.
- [Co(NH$_3$)$_3$(NO$_2$)$_3$] lacks asymmetry and does not exhibit optical isomerism.
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