Which compound is aromatic according to Huckel rule?

A Cyclooctatetraene (8 pi electrons)

B Benzene (6 pi electrons)

C Cyclobutadiene (4 pi electrons)

D Ethylene (2 pi electrons)

✓ Correct Answer: Option B

Huckel rule: 4n+2 pi electrons in a planar, cyclic, fully conjugated system. Benzene: 6 = 4(1)+2 ✓ aromatic.

💡 Why is B) the correct answer?

The correct answer to the question "Which compound is aromatic according to Huckel rule?" is Option B: Benzene (6 pi electrons).

The other options — A) Cyclooctatetraene (8 pi electrons), C) Cyclobutadiene (4 pi electrons), D) Ethylene (2 pi electrons) — are incorrect for this MCAT Exam Prep question. As explained above: Huckel rule: 4n+2 pi electrons in a planar, cyclic, fully conjugated system. Benzene: 6 = 4(1)+2 ✓ aromatic.

📚 About This MCAT Exam Prep Practice Question

This 2-level MCAT Exam Prep question from the Chemical & Physical Foundations topic is part of BrainForge Quiz's free exam preparation library. Each question includes the correct answer and a detailed explanation to help you understand the underlying concept, not just memorize the answer.

How to use this page: Read the question above, consider all four options (A through D), then check the highlighted correct answer and explanation. For active timed practice, start a free MCAT Exam Prep practice test or use flashcards for spaced repetition review.

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Which compound is aromatic according to Huckel rule?

✓ Correct Answer: Option B

📚 About This MCAT Exam Prep Practice Question

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