Name the following aromatic hydrocarbon.

Option D. 1–chloro–3–methylbenzene

Explanation:

To name the compound given in question above, the following must be observed:

1. Determine the functional group of compound.

2. Identify the substituent group attached to the compound.

3. Identify the position of the substituent group by giving it the lowest possible count.

NOTE: numbering is done alphabetically.

4. Combine the above to obtain the name

Now, we can obtain the name of the compound as follow:

1. The compound is an aromatic compound with the benzene ring.

2. The substituent groups attached to compound are:

I. Chlorine (Cl)

II. Methyl (–CH₃)

3. The position of the substituent group attached are:

I. Chlorine is located at carbon 1

II. Methyl (–CH₃) is located at carbon 3

4. The name of the compound is:

1–chloro–3–methylbenzene