In both alkyl halides, The halogen atom is attached directly to the carbon atoms. They are expected to exhibit similar reactivity. However,aryl halides are comparatively little reactive, particularly towards nucleophilic substitution reactions. For example, hydrolysis of ethyl chloride takes place by simple boiling with aqueous KOH. On the other hand, the alkaline hydrolysis of chlorobenzene needs a very high temperature (623 K) as well as very high pressure Among the following, which has weakest C-X bondA. benzyl bromideB. BromobenzeneC. Vinyl bromineD. ethyl bromide

In both alkyl halides, The halogen atom is attached directly to the ca

1.	In both alkyl halides, The halogen atom is attached directly to the carbon atoms. They are expected to exhibit similar reactivity. However,aryl halides are comparatively little reactive, particularly towards nucleophilic substitution reactions. For example, hydrolysis of ethyl chloride takes place by simple boiling with aqueous KOH. On the other hand, the alkaline hydrolysis of chlorobenzene needs a very high temperature (623 K) as well as very high pressure Among the following, which has weakest C-X bondA. benzyl bromideB. BromobenzeneC. Vinyl bromineD. ethyl bromide
Answer» Correct Answer - A `C_(6)H_(5)CH_(2)-Br` has weakest C-X. bond as `C_(6)H_(5)overset(o+)(C )H_(2)` ion is easily resonance stabilized. More over C-Br can cleave most easily.

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