Question

How many dibromo benzenes are possible?
A. 1
B. 2
C. 3
D. 4

Answer 1

Hint: Aromatic compounds are those compounds which contain one or more than one rings with delocalized $\pi $electrons. Benzene is the most common aromatic compound having the chemical formula ${{C}_{6}}{{H}_{6}}$. Aromaticity is not only based on the benzene ring but also defined by $(4n+2)\pi $rule named as Huckel’s rule.

Complete answer:
Dibromo benzene is an example of aromatic compounds where aromatic compounds are those compounds which have benzene ring in them and halogens are attached with benzene here the halogen group is bromine and dibromo refers with term two bromine atoms are attached with benzene.
Dibromo benzene is an organic compound in which a benzene group is attached with two bromine atoms as discussed. Bromination is the process of adding bromine in the given compound, the product formed after bromination is dibromo benzene. Bromination of benzene is produced generally three products which can be differentiated on the basis of attachment of bromine molecules. These can be explained as:
1. 1,2-dibromobenzene: When bromine atoms are attached on the 1st and 2nd carbon of benzene ring.
2. 1,3-dibromobenzene: This type of compound is formed when bromine atoms are attached on 1 and 3rd carbon of benzene ring.
3. 1,4-dibromobenzene: When bromine atoms are attached with the 1st and 4th carbon atoms of the benzene ring.

Thus from the above discussions we can say that option C is the correct answer.

Note:
The 2nd position of the benzene ring is known as ortho position of that ring and 3rd position is known as meta and the 4th and 1st position is known as para positions whereas 5th is also known as ortho and 6th as meta therefore only 3 structures can be said.