Answer:
There are 4 monochloro isomers possible
Explanation:
The monochlorination of 2-methyl butane has 4 monochloro isomers, with different grade of abundance.
33 % 2-chloro-3-methylbutane
30 % 1-chloro-2-methylbutane
22 % 2-chloro-2-methylbutane
15 % 1-chloro-3-methylbutane.
33 % 2-chloro-3-methylbutane is the most stable; 15 % 1-chloro-3-methylbutane is the less stable.
Of those 4 monochloro isomers, there are two chiral compounds possible
⇒ 2-chloro-2-methylbutane
⇒ 2-chloro-3-methylbutane.
