Question

How many structural isomers are possible for $C_4{H}_{9}Cl$?

• A. 2
• B. 4
• C. 8
• D. 10

Answer 1

Answer: (B)

4

Draw all possible isomers of $C_4{H}_{9}Cl$ and count them.
Structural isomers of $C_4{H}_{9}Cl$
$\therefore$ It has 4 structural isomers.
Note: 2-chlorobutane shows optical isomerism also.
$\therefore$ Total number of isomers of $C_4{H}_{9}Cl=5$.