A) \[{{(C{{H}_{3}})}_{3}}C-Cl\]
B) \[C{{H}_{2}}=CHCl\]
C) \[C{{H}_{3}}C{{H}_{2}}Cl\]
D) \[C{{H}_{2}}=CHC{{H}_{2}}Cl\]
Correct Answer: B
Solution :
Chlorine of vinyl chloride \[(C{{H}_{2}}=CHCl)\]is non-reactive (less reactive) towards nucleophile in nucleophilic substitution reaction because it shows the following resonating structure due to +M effect of ?Cl atom.
In structure II, Cl-atom have positive charge and partial double bond character with C of vinyl group, so it is more tightly attracted towards the nucleus and it does not get replaced by nucleophile in\[{{S}_{N}}\]reaction.
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