Answer
2-methyl hexane
Work Step by Step
1. The longest carbon chain consists of 6 carbon atoms if we start counting from the right-hand side. Therefore the base name for this alkane is hexane.
2. To give the substituent group the smallest number, counting is done from the right-hand side. The second carbon atom from the right has a methyl group present.
3. Hence, the name of this alkane is 2-methyl hexane.