Explain a large number of polycyclic benzenoid aromatic

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There are four reasonable resonance structures for anthracene. Draw them.

A large number of polycyclic benzenoid aromatic hydrocarbons are known. One of these, benz/a/pyrene, is a powerful carcinogen found in tobacco smoke. From the literature, locate and then draw the structure of this hydrocarbon. Can you suggest other sources where this material might be expected to be present?

Reference no: EM13134599

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