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(B) The reaction with $AgNO_3$ involves the formation of a silver halide precipitate $(AgBr)$ upon the ionization of the carbon-halogen bond to form a

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Cycloheptatrienyl bromide

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(B) The reaction with $AgNO_3$ involves the formation of a silver halide precipitate $(AgBr)$ upon the ionization of the carbon-halogen bond to form a carbocation. For the reaction to occur readily,the resulting carbocation must be stable. Cycloheptatrienyl bromide ionizes to form the cycloheptatrienyl cation (tropylium ion),which is a $7$-membered aromatic ring with $6\pi$ electrons,making it highly stable due to aromaticity. Therefore,it readily reacts with $AgNO_3$ to form a precipitate of $AgBr$.

Which of the following compounds will produce a precipitate with $AgNO_3$?

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