The carbon atom bonded to the halogen in an alkyl halide is attacked by nucleophiles because it carries
Correct answer: A. a partial positive charge, since the halogen is more electronegative
- A. a partial positive charge, since the halogen is more electronegative
- B. a partial negative charge
- C. a full negative charge
- D. no charge at all
Explanation
The carbon to halogen bond is polar, with electron density drawn towards the halogen, so the carbon is electron deficient and attracts species with a lone pair. This polarity is the reason alkyl halides are far more reactive than alkanes despite looking similar. The halogen leaves as a stable halide ion, which is why it is described as a good leaving group.
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About Nomenclature, Structure and Reactivity
Alkyl halides are named by selecting the longest carbon chain and locating the halogen substituent, while their structures are classified as primary, secondary or tertiary. Their reactivity includes nucleophilic substitution and elimination, with the behaviour of leaving groups and the distinction between SN1 and SN2 mechanisms linked to substrate structure.
Practise Alkyl Halides
458 free Alkyl Halides MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
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