How many electrons are there in a benzene molecule?
Answer and explanation
Correct answer: A. 6
- Step 1: Benzene () consists of a planar hexagonal ring of -hybridised carbon atoms.
- Step 2: Each carbon contributes one unhybridised orbital containing electron perpendicular to the molecular plane.
- Step 3: Summing across the ring yields delocalised electrons satisfying Hückel's aromaticity rule ().
Answer
6.
Why not the others: The alternative options (4, 8, 3) correspond to incorrect stoichiometric ratios, wrong reaction intermediates, or arithmetic evaluation errors.
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