A) Chloro benzene
B) Vinyl chloride
C) Allyl chloride
D) p-chloro toluene
Correct Answer: C
Solution :
The substitution of chlorine is the most easiest in allyl chloride because allyl carbocation is more stabilized due to reasonance. \[C{{H}_{2}}=CHC{{H}_{2}}Cl\xrightarrow[-C{{l}^{-}}]{{}}\underset{stable\text{ }due\text{ }to\text{ }reasonance}{\mathop{C{{H}_{2}}=CH-\overset{+}{\mathop{C}}\,{{H}_{2}}}}\,\] While vinyl chloride and chlorobenzene are stable because a partial double bond character between\[C-Cl\]bond is formed due to resonance.
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