Question

Name all the isomers of octane ${\mathrm{C}}_8{\mathrm{H}}_{18}$

Answer 1

Definition: Isomers are compounds having the same molecular formula but differ in structure or arrangement of carbon atoms.

All isomers of octane are.

1. Octane
2. 2. 2-Methyl heptane
3. 3. 3-Methyl heptane
4. 4. 4-Methyl octane
5. 2, 2-Dimethyl hexane.
6. 2,3-Dimethyl hexane.
7. 2,4-Dimethyl hexane.
8. 2,5-Dimethyl hexane.
9. 3, 3-Dimethyl hexane
10. 10, 3,4-DImethyl hexane
11. 11. 3-Ethyl hexane
12. 2, 2, 3-Trimethylpentane
13. 2, 2, 4-Trimethyl pentane
14. 2, 3, 3-Trimethylpentane
15. 2, 3, 4-Trimethyl pentane.

There are total of 15 isomers of octane. The structure of these isomers in sequence is given below.