Which of the following compounds shows optica | vedclass

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(B) Optical isomerism is shown by coordination compounds that lack a plane of symmetry and a center of symmetry.$A$. cis-$[CrCl_3(NH_3)_3]$ (facial an

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$[Co(en)_3]^{3+}$

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(B) Optical isomerism is shown by coordination compounds that lack a plane of symmetry and a center of symmetry.$A$. cis-$[CrCl_3(NH_3)_3]$ (facial and meridional isomers) does not show optical isomerism.$B$. $[Co(en)_3]^{3+}$ contains three bidentate ligands ($en$ = ethylenediamine). It lacks both a plane of symmetry and a center of symmetry,thus it exists as a pair of enantiomers ($d$ and $l$ forms).$C$. cis-$[Co(NH_3)_4Cl_2]^+$ has a plane of symmetry,so it is optically inactive.$D$. trans-$[Co(en)_2Cl_2]^+$ has a plane of symmetry,so it is optically inactive.Therefore,the correct option is $B$.

Which of the following compounds shows optical isomerism?

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