On bromination, propionic acid gives two isomeric 2-bromopropionic acids. This pair is an example of

Options

A. Chain isomers
B. Optical isomers
C. Cis-trans isomers
D. Position isomers

Answer

B

Explanation

Bromination of propionic acid give `alpha`- bromopropionic acid

Molecule II and III are enantiomers, since molecule is symmetrical about its vertical axis, it can be anticipated from the theory of probability that either hydrogen atom should be replaced equally well to give `(pm) alpha`- bromopropionic acid