Question

Which is a pair of geometrical isomers ?
Br
H н
Br
ci
Br
I
C
H
CH3
c
CH3
III
Br
н
н
Br
IV.
CI
CH
A
I and II​

Answer 1

Explanation:

There is free rotation about the carbon-to-carbon single bonds (C–C) in alkanes. In contrast, the structure of alkenes requires that the carbon atoms of a double bond and the two atoms bonded to each carbon atom all lie in a single plane, and that each doubly bonded carbon atom lies in the center of a triangle. This part of the molecule’s structure is rigid; rotation about doubly bonded carbon atoms is not possible without rupturing the bond. Look at the two chlorinated hydrocarbons in