Cis-trans isomerism is found in square planar | vedclass

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(C) In square planar complexes with coordination number $4$,$cis-trans$ isomerism is observed when the ligands are arranged such that identical groups

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$MA_2B_2$

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(C) In square planar complexes with coordination number $4$,$cis-trans$ isomerism is observed when the ligands are arranged such that identical groups are adjacent $(cis)$ or opposite $(trans)$ to each other.For a complex of the type $[MA_2B_2]$,two isomers are possible: one where the two $A$ ligands are adjacent $(cis)$ and one where they are opposite $(trans)$.Complexes of the type $[MA_4]$,$[MA_3B]$,and $[MAB_3]$ do not exhibit $cis-trans$ isomerism because all possible arrangements are equivalent due to symmetry.

$Cis-trans$ isomerism is found in square planar complexes of the molecular formula: ($A$ and $B$ are monodentate ligands):

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