In SN2 reaction, nucleophile attacks on the electrophilic carbon?
Correct answer: B. Opposite to leaving group
- A. From the side of leaving group
- B. Opposite to leaving group
- C. In front of leaving group
- D. Below leaving group
Explanation
This option is correct as in SN2 mechanism the nucleophile attacks on the opposite side to the leaving group since this provides the best overlap between the nucleophile lone pair and the C-X anti bonding orbital. The leaving group is then pushed off the opposite side and the product is formed with inversion of tetrahedral geometry at the centre atom.
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About Alkyl Halides
Alkyl halides are named and related to their carbon-halogen structure, polarity and reactivity. The key reactions are nucleophilic substitution by SN1 and SN2 mechanisms and elimination by E1 and E2 mechanisms, including how substrate structure, nucleophile, base, solvent and temperature influence substitution versus elimination.
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