The number of isomeric alkyl halides possible for  \(C_5H_{11}Cl\) is

8

The correct answer is option 4. 8.

There are 8 possible isomers of \(C_5H_{11}Cl\). These are:

• 1-chloropentane
• 2-chloropentane
• 3-chloropentane
• 1-chloro-2-methylbutane
• 1-chloro-3-methylbutane
• 2-chloro-3-methylbutane
• 2-chloro-2-methylbutane
• 1-chloro-2,2-dimethylpropane

The isomers differ in the position of the chlorine atom on the pentane chain. For example, 1-chloropentane has the chlorine atom at the first carbon atom of the pentane chain, while 2-chloropentane has the chlorine atom at the second carbon atom of the pentane chain.