Isomerism
How many structural isomers are possible for C₅H₁₂?
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About This Question
- Subject
- chemistry
- Chapter
- some basic principles of organic chemistry
- Topic
- isomerism
- Difficulty
- Easy
- Year
- 2025
Solution
Correct Answer:
3
Structural isomers have the same molecular formula but different arrangements of atoms. For Pentane (C5H12), the possible isomers are:
- n-Pentane: A straight chain (CH3−CH2−CH2−CH2−CH3).
- Isopentane (2-Methylbutane): A branched chain with one methyl group on the second carbon.
- Neopentane (2,2-Dimethylpropane): A highly branched chain with two methyl groups on the central carbon.
- These are specifically chain isomers.
This easy difficulty chemistry question is from the chapter some basic principles of organic chemistry, covering the topic of isomerism. It appeared in the 2025 exam.
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