Reactivity Of Haloalkanes
Arrange the following alkyl halides in decreasing order of reactivity towards SN2 reaction: CH3I, CH3Br, CH3Cl, CH3F
Select the correct option:
Solution
CH3I>CH3Br>CH3Cl>CH3F
For the same alkyl group, SN2 reactivity increases with better leaving group ability. The C-I bond is weakest and I- is the best leaving group among halides, followed by Br-, Cl-, and F-. Therefore the order is CH3I > CH3Br > CH3Cl > CH3F.
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About This Question
- Subject
- chemistry
- Chapter
- organic compounds containing halogens
- Topic
- reactivity of haloalkanes
- Difficulty
- Easy
- Year
- 2025
Solution
Correct Answer:
CH3I>CH3Br>CH3Cl>CH3F
For the same alkyl group, SN2 reactivity increases with better leaving group ability. The C-I bond is weakest and I- is the best leaving group among halides, followed by Br-, Cl-, and F-. Therefore the order is CH3I > CH3Br > CH3Cl > CH3F.
This easy difficulty chemistry question is from the chapter organic compounds containing halogens, covering the topic of reactivity of haloalkanes. It appeared in the 2025 exam.
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