Chemistry · Aromaticity

Which chemist formulated the rule predicting that the combination of the number of π-electrons (4n + 2) and the planar ring structure determines whether a monocyclic conjugated molecule is aromatic?

Verified Solution4 OptionsUpdated: October 2026👁️1 View

1Victor Grignard
2Erich Hückel✓
3Auguste Laurent
4Alexander Zaitsev

Correct answer

Erich Hückel

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Which chemist formulated the rule predicting that the combination of the number of π-electrons (4n + 2) and the planar ring structure determines whether a monocyclic conjugated molecule is aromatic?

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Which chemist formulated the rule predicting that the combination of the number of &pi;-electrons (4n + 2) and the planar ring structure determines whether a monocyclic conjugated molecule is aromatic?

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Which chemist formulated the rule predicting that the combination of the number of π-electrons (4n + 2) and the planar ring structure determines whether a monocyclic conjugated molecule is aromatic?