Textbook Question
Classify the following conjugated systems as having 4n or 4n + 2 π electrons.
(c)
Table of contents
- 1. A Review of General Chemistry5h 6m
- Summary23m
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- 27. Heterocycles2h 0m
- Nomenclature of Heterocycles15m
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- 29. Amino Acids4h 20m
- Proteins and Amino Acids19m
- L and D Amino Acids14m
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- Amino Acid Chart1h 18m
- Acid-Base Properties of Amino Acids33m
- Isoelectric Point14m
- Amino Acid Synthesis: HVZ Method12m
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- Reactions of Amino Acids: Esterification7m
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- Peptides12m
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- Intro to Citric Acid Cycle7m
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- 34. Nucleic Acids1h 32m
- 35. Transition Metals6h 14m
- Electron Configuration of Elements45m
- Coordination Complexes20m
- Ligands24m
- Electron Counting10m
- The 18 and 16 Electron Rule13m
- Cross-Coupling General Reactions40m
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- Suzuki Reaction25m
- Sonogashira Coupling Reaction17m
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- Negishi Coupling Reaction16m
- Buchwald-Hartwig Amination Reaction19m
- Eglinton Reaction17m
- Catalytic Allylic Alkylation18m
- Alkene Metathesis23m
- 36. Synthetic Polymers1h 49m
- Introduction to Polymers6m
- Chain-Growth Polymers10m
- Radical Polymerization15m
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- Polymers Structure and Properties8m
18. Aromaticity
Huckel's Rule
Multiple Choice
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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Verified step by step guidance1
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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