A) Benzyl bromide
B) Bromobenzene
C) Vinyl bromide
D) Benzyl chloride
Correct Answer: A
Solution :
\[C-X\] bond in benzyl bromide is much weaker than in vinyl bromide and bromobenzene since the benzyl cation left after the removal of the bromide ion is stabilized by resonance. Further, \[C-Br\] is weaker than \[C-Cl\] bond. Therefore, \[{{C}_{6}}{{H}_{5}}C{{H}_{2}}Br\] has the weakest \[C-X\] bond.
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