STANDARDChemistry-Haloalkanes and Haloarenes
STANDARD Chemistry Sₙ2 Mechanism MCQ Question
Type: MCQ-conceptual-Medium-Class 12
Among the choices of alkyl bromide, the least reactive bromide in Sₙ2 reaction is
A
1-bromopentane
B
2-bromo-2-methylbutane
C
1-bromo-3-methylbutane
D
1-bromo-2-methylbutane
Correct Answer
Option B
Detailed Explanation
The reactivity of different alkyl halides towards Sₙ2 reaction decreases in the order: methyl halides > 1° halides > 2° halides > 3° halides. Since, 2-bromo-2-methylbutane is a tertiary bromide hence it is least reactive among the given.
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