The number of structural isomers for \(\mathrm{C_6H_{14}}\) is :
Show Hint
- 3
- 4
- 5
- 6
The Correct Option is C
Solution and Explanation
Longest chain of 6 C: n-hexane (1).
Longest chain of 5 C with one methyl: 2-methylpentane and 3-methylpentane (2).
Longest chain of 4 C with two methyls: 2,2-dimethylbutane and 2,3-dimethylbutane (2).
A 3-carbon longest chain cannot hold the remaining three carbons without exceeding the chain length, so no more isomers exist.
Total = 1 + 2 + 2 = 5.
Answer: (3) 5
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