Aromatic HydrocarbonsmediumNUMERICAL

In the resonance hybrid of the arenium ion (sigma complex) formed during the electrophilic attack onAromatic Hydrocarbons Chemistry Question

Question

In the resonance hybrid of the arenium ion (sigma complex) formed during the electrophilic attack on benzene, how many carbon atoms share the delocalized positive charge?

Answer: 5

💡 Solution & Explanation

The electrophile forms a covalent bond with one carbon atom, which becomes $sp^3$ hybridized and electrically neutral. The remaining 5 carbon atoms in the ring remain $sp^2$ hybridized, and the positive charge is delocalized across them via resonance.

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