Verified answer

(CH3)2CHCH2Cl

This means that the 2nd carbon from the left is attached to 2 methyl groups.

C

|

C--C--C--Cl

|

C

Numbering will start from the first carbon from the right. Therefore, the name of the compound is

1-Chloro-3-methylbutane

incorrect for both, but close...the answer is

1-chloro-3-methylpropane ^_^

and for the common name is isobutyl chloride

1-chloro-2-methylpropane