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How many entirely delocalized electrons are present in the peripheral conjugated system of AnthracenHydrocarbons Chemistry Question

Question

How many entirely delocalized $\pi$ electrons are present in the peripheral conjugated system of Anthracene (three linearly fused benzene rings)?

Answer: B

💡 Solution & Explanation

Anthracene ($C_{14}H_{10}$) has 7 continuous double bonds in its benzenoid framework. Each provides 2 electrons, resulting in a $14\pi$ electron cloud. $4n + 2 = 14 \implies n = 3$.

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