Question: When naphthalene is hydrogenated, the heat released is about 80 kcal/mol. Using an isolated cyclohexene unit for comparison, estimate the resonance energy of naphthalene. Why

When naphthalene is hydrogenated, the heat released is about 80 kcal/mol. Using an isolated cyclohexene unit for comparison, estimate the resonance energy of naphthalene. Why is the resonance energy of naphthalene less than twice that of benzene?

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