Question

The stereoisomers that are formed by electrophilic addition of bromine to tans-but-$2$-ene is/are :

(JEE MAIN 2021)

• A. $2$ identical mesomers
• B. $2$ enantiomers and $2$ mesomers
• C. $2$ enantiomers
• D. $1$ racemic and $2$ enantiomers

Answer 1

The correct option is A $2$ identical mesomers

Bromination of alkene takes place by anti-addition.
Mesoform Mesoform
Mirror images of mesoform are identical.
Hence, option (b) is correct.