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An aromatic molecule will NOT:

1. have 4n pi electrons
2. have (4n + 2) pi electrons
3. be planar
4. be cyclic

Correct answer: have 4n pi electrons

Solution

For aromaticity (Huckel's rule) a molecule must be cyclic, planar, fully conjugated, and have (4n + 2) pi electrons. A system with 4n pi electrons is anti-aromatic, so an aromatic molecule will NOT have 4n pi electrons.

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