what is the name of this alkane? o 1 - methyl,3 - ethylnonane o 1 - methyl,5 - ethylisohexane o 1 - ethyl,3…

Answer:

1 - ethyl,3 - methylcyclohexane

Explanation:

Step1: Identify the parent chain

The parent chain is a cyclohexane (a 6 - membered cyclic alkane).

Step2: Locate and name substituents

There is an ethyl group ($-CH_2CH_3$) and a methyl group ($-CH_3$) attached to the cyclohexane ring. Numbering of the ring atoms should be done in a way that gives the lowest possible numbers to the substituents. Here, if we start numbering from the carbon with the ethyl group as 1, the methyl - bearing carbon is 3. So the name is 1 - ethyl,3 - methylcyclohexane.