Which one of the following can exhibit cis-trans-isomerism? | Chemistry | SolveeIt

Question

Which one of the following can exhibit cis-trans-isomerism?

CH $_3$ - CHCI - COOH

H - C $\equiv$ C - Cl

Cl - CH =CHCI

CICH $_2 - CH_2$ CI

Answer

Cl - CH =CHCI

Explanation

Solution

The main conditions for geometrical isomerism are
(i) The molecule must have a double bond and the
double bond gives restricted rotation
(ii) The two atoms or groups attached to the same
carbon atom must be different.
These two conditions are only obeyed by
Cl - CH=CH - Cl, so it shows geometrical
isomerism.

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Solution