Question:medium
The correct order of increasing reactivity of the following alkyl halides, CH$_3$CH$_2$CH(Br)CH$_3$ (I), CH$_3$CH$_2$CH$_2$Br (II), (CH$_3$)$_2$CClCH$_2$CH$_3$ (III) and CH$_3$CH$_2$CH$_2$Cl (IV) towards S$_N$2 displacement is
The correct order of increasing reactivity of the following alkyl halides, CH$_3$CH$_2$CH(Br)CH$_3$ (I), CH$_3$CH$_2$CH$_2$Br (II), (CH$_3$)$_2$CClCH$_2$CH$_3$ (III) and CH$_3$CH$_2$CH$_2$Cl (IV) towards S$_N$2 displacement is
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S$_N$2 rule:
Primary > Secondary >> Tertiary
Br > Cl > F (leaving group ability)
Updated On: May 1, 2026
- \( I < II < III < IV \)
- \( III < I < IV < II \)
- \( III < I < II < IV \)
- \( II < IV < I < III \)
- \( I < III < II < IV \)
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The Correct Option is B
Solution and Explanation
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