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Primary alkyl halides typically undergo nucleophilic substitution by:
ASN1 mechanism, via a tertiary carbocation intermediate
BSN2 mechanism, with inversion of configuration here
CE1 mechanism, via removal of a beta hydrogen first
DNo reaction, since 1° R-X are inert at the lab bench
Answer & Solution
Correct answer: B. SN2 mechanism, with inversion of configuration here
Primary R-X favour SN2 (back-side attack) due to little steric hindrance.
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