교과서 질문
Classify the following conjugated systems as having 4n or 4n + 2 π electrons.
(c)
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18. Aromaticity
Huckel's Rule
객관식
Which of the following is NOT one of Hückel's rules for aromaticity?
A
Cyclic molecule
B
Planar molecule
C
4n + 2 atoms in the ring
D
Fully conjugated ring
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검증된 단계별 안내1
Understand Hückel's rules for aromaticity, which are criteria that a molecule must meet to be considered aromatic.
Hückel's rules state that a molecule must be cyclic, planar, and fully conjugated, meaning that it has a continuous overlap of p orbitals.
The molecule must also follow the 4n + 2 rule, where n is a non-negative integer, indicating the number of π electrons in the ring.
Review the options given: Cyclic molecule, Planar molecule, 4n + 2 atoms in the ring, and Fully conjugated ring.
Identify that the statement '4n + 2 atoms in the ring' is incorrect because Hückel's rule refers to π electrons, not atoms.
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