The number of optical isomers possible for 2 - Bromo- 3 - Chlorobutane are

Step-by-step solution

Number of stereo isomers = 2 n Where, n = number of stereo centre. The carbon atom which is attached with four different groups or atoms is known as stereo centre. The 2 - Bromo - 3 - chlorobutane has the two stereo centre. These are represented by the *. So, the number of stereo centre = n = 2 . So, the number of stereo isomers = 2 2 = 4 Hence, the number of optical isomers possible for 2 - Bromo 3 - Chlorobutane are 4 .