(B) $cis-2$-butene has a higher dipole moment than $trans-2$-butene because the bond dipoles of the two $C-CH_3$ bonds reinforce each other in the $ci

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$cis-2$-butene has less dipole moment than $trans-2$-butene.

(B) $cis-2$-butene has a higher dipole moment than $trans-2$-butene because the bond dipoles of the two $C-CH_3$ bonds reinforce each other in the $cis$ isomer,whereas they cancel each other out in the $trans$ isomer. Therefore,the statement in option $B$ is incorrect.

Class 11 Chemistry 8-2.Organic Chemistry : Isomerism Geometrical isomerism

Medium

The incorrect statement regarding the geometrical isomers of $2$-butene is:

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A
$cis-2$-butene and $trans-2$-butene are not interconvertible at room temperature.
B
$cis-2$-butene has less dipole moment than $trans-2$-butene.
C
$trans-2$-butene is more stable than $cis-2$-butene.
D
$cis-2$-butene and $trans-2$-butene are stereoisomers.