. Which of the following is the correct order of decreasing reactivity towards nucleophilic substitution

A. Vinyl chloride > allyl chloride > propyl chloride

B. Propyl chloride > vinyl chloride > allyl chloride

C. Ally chloride > vinyl chloride > propyl chloride

D. Allyl chloride > propyl chloride > vinyl chloride

Best Answer

Ans: D

Sol: Vinyl chloride is least reactive because C—Cl bond is stronger and shorter. Allyl chloride is more reactive than propyl chloride because Allyl carbocation formed is more stable (due to resonance) than the propyl carbocation.

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