Which of the following complexes exhibits opt | vedclass

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(D) Optical activity in coordination complexes is observed when the complex lacks a plane of symmetry and its mirror image is non-superimposable on th

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(D) Optical activity in coordination complexes is observed when the complex lacks a plane of symmetry and its mirror image is non-superimposable on the original structure.Among the given options,the complex $[M(B)_2(en)_2]$ (where $en$ is ethylenediamine) exists in cis and trans forms.The cis-isomer of $[M(B)_2(en)_2]$ lacks a plane of symmetry and is chiral,thus exhibiting optical activity.The other complexes listed possess planes of symmetry in their most stable configurations,making them optically inactive.

List-$I$	List-$II$
$(a).$ $[Co(NH_3)_6][Cr(CN)_6]$	$(i).$ Linkage isomerism
$(b).$ $[Co(NH_3)_3(NO_2)_3]$	$(ii).$ Solvate isomerism
$(c).$ $[Cr(H_2O)_6]Cl_3$	$(iii).$ Coordination isomerism
$(d).$ $cis-[CrCl_2(ox)_2]^{3-}$	$(iv).$ Optical isomerism

Which of the following complexes exhibits optical activity?

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