객관식
In which of the following cases does a lone pair of electrons on an atom not contribute to the aromatic system of a ring?
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- 1. A Review of General Chemistry5h 6m
- Summary23m
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- Reactions of Amino Acids: Esterification7m
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- Intro to Citric Acid Cycle7m
- Structures of the Citric Acid Cycle19m
- The Citric Acid Cycle35m
- 34. Nucleic Acids1h 32m
- 35. Transition Metals6h 14m
- Electron Configuration of Elements45m
- Coordination Complexes20m
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- Electron Counting10m
- The 18 and 16 Electron Rule13m
- Cross-Coupling General Reactions40m
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- 36. Synthetic Polymers1h 49m
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- Polymers Structure and Properties8m
1. A Review of General Chemistry
Resonance Structures
객관식
Which of the following best explains what resonance structures are?
A
Different molecules with the same molecular formula but different connectivity of atoms.
B
Different Lewis structures for the same molecule that differ only in the placement of electrons, not the arrangement of atoms.
C
Structures that show the actual movement of atoms during a chemical reaction.
D
Isomers that have the same connectivity but differ in the arrangement of atoms in space.
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검증된 단계별 안내1
Understand that resonance structures are a way to represent a single molecule using multiple Lewis structures.
Recognize that these Lewis structures differ only in the placement of electrons (such as pi electrons or lone pairs), not in the positions of the atoms themselves.
Note that resonance structures do not represent different molecules or isomers; instead, they are different depictions of the same molecule's electron distribution.
Realize that resonance helps to describe the delocalization of electrons within a molecule, which cannot be accurately shown by a single Lewis structure.
Conclude that the best explanation for resonance structures is: 'Different Lewis structures for the same molecule that differ only in the placement of electrons, not the arrangement of atoms.'
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