Regarding the potential energy diagram of standard electrophilic aromatic substitutions (like bromination or nitration), which of the following statements are correct?

Question

Prashant Kotian · Accepted Answer

Correct answer: A,C. The arenium ion is a high-energy intermediate (higher than reactants/products) but sits in a local minimum between two transition states. The first TS is higher in energy than the second TS. The overall reaction is exothermic because aromaticity is restored. The intermediate is non-aromatic (due to the carbon), not anti-aromatic.

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