Question

What is the total number of chain isomers exhibited by hexane?

• A. $9$
• B. $3$
• C. $4$
• D. $5$

Hint:

As the number of carbon atoms increases, the number of possible chain isomers also increases rapidly.

Answer 1

The Correct Option is D

Step 1: Write the molecular formula of hexane.
Hexane has the molecular formula $C_6H_{14}$.
Step 2: Understand chain isomerism.
Chain isomerism arises due to different arrangements of the carbon skeleton while keeping the same molecular formula.
Step 3: List all chain isomers of hexane.
The five chain isomers of hexane are:
1. n-Hexane
2. 2-Methylpentane
3. 3-Methylpentane
4. 2,2-Dimethylbutane
5. 2,3-Dimethylbutane
Step 4: Conclusion.
Hexane exhibits a total of five chain isomers.