Which of the following complexes exists as a | vedclass

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(B) Optical isomerism is common in octahedral complexes of the formula $[M(AA)_3]$,etc. $[Cr(en)_3]^{3+}$ is an octahedral complex of the formula $[M(

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

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(B) Optical isomerism is common in octahedral complexes of the formula $[M(AA)_3]$,etc. $[Cr(en)_3]^{3+}$ is an octahedral complex of the formula $[M(AA)_3]$,where $en$ is ethylenediamine (a bidentate ligand). This complex lacks a plane of symmetry and a center of inversion,making it chiral. Therefore,it shows optical isomerism and exists as a pair of non-superimposable mirror images (enantiomers). $[Co(NH_3)_4Cl_2]^{+}$,$[Co(P(C_2H_5)_3)_2ClBr]$,and trans-$[Co(en)_2Cl_2]^{+}$ possess a plane of symmetry and are thus optically inactive.

Which of the following complexes exists as a pair of enantiomers?

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