Dichloroethene cannot exhibit ............

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(B) Dichloroethene $(C_2H_2Cl_2)$ exists in three isomeric forms: $1,1$-dichloroethene,$cis$-$1,2$-dichloroethene,and $trans$-$1,2$-dichloroethene.$1,

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Optical isomerism

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(B) Dichloroethene $(C_2H_2Cl_2)$ exists in three isomeric forms: $1,1$-dichloroethene,$cis$-$1,2$-dichloroethene,and $trans$-$1,2$-dichloroethene.$1,2$-dichloroethene exhibits geometrical isomerism due to restricted rotation around the $C=C$ double bond.However,all isomers of dichloroethene are planar molecules.Since they possess a plane of symmetry,they are achiral and cannot exhibit optical isomerism.

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