Leaving Group Ability
Mediumchemistry
Best leaving group among given (in SN1):
Select the correct option:
Solution
Incorrect! Answer:
I−
- Criteria: A good leaving group must be able to stabilize the negative charge after it departs.
- Basicity: Weaker bases are better leaving groups. The order of acidity of hydracids is HI>HBr>HCl>HF.
- Conjugate Bases: Therefore, the order of basic strength is I−<Br−<Cl−<F−.
- Size and Polarizability: Iodide (I−) is the largest and most polarizable. It can spread the negative charge over a much larger volume than the small Fluoride ion.
- Bond Strength: The C−I bond is the longest and weakest, making its cleavage easier.
- Ranking: I−>Br−>Cl−>F−.
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About This Question
- Subject
- chemistry
- Chapter
- halogen organics
- Topic
- leaving group ability
- Difficulty
- Medium
- Year
- 2025
This medium difficulty chemistry question is from the chapter halogen organics, covering the topic of leaving group ability. It appeared in the 2025 exam. Practice this and similar questions to strengthen your understanding of halogen organics concepts.
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