Class 11 NEET Chemistry Organic Chemistry Some Basic Principles And Techniques Part 1

CH3CH=CHCH2

CH

| Br

−CH3
the number of stereoisomers is given by sum of geometrical isomers (because of presence of C = C)and optical isomers (because of presence of chiral carbon atom).
Number of geometrical isomers = 2 (one C = C is present).
Number of optical isomers = 2 (one chiral carbon atom).
Total number of stereoisomers = 2 + 2 = 4