What is resonance in chemistry?
AP Chemistry Unit 2 Review

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Chemistry
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11th - 12th Grade
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Hard
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1.
FLASHCARD QUESTION
Front
Back
Resonance is a phenomenon where a molecule can be represented by two or more valid Lewis structures, indicating that the actual structure is a hybrid of these forms.
2.
FLASHCARD QUESTION
Front
What does it mean when all bonds in a molecule are of the same length?
Back
It indicates that the molecule exhibits resonance, leading to equal bond lengths due to the delocalization of electrons.
3.
FLASHCARD QUESTION
Front
What is the significance of hybridization in carbon compounds?
Back
Hybridization explains the geometry and bonding properties of carbon compounds, allowing carbon to form four equivalent bonds.
4.
FLASHCARD QUESTION
Front
What type of hybridization does carbon undergo in benzene (C6H6)?
Back
Carbon undergoes sp² hybridization in benzene, resulting in a planar structure with 120° bond angles.
5.
FLASHCARD QUESTION
Front
What is the formal charge and how is it calculated?
Back
The formal charge is a theoretical charge assigned to an atom in a molecule, calculated using the formula: Formal Charge = Valence Electrons - (Non-bonding Electrons + 1/2 Bonding Electrons).
6.
FLASHCARD QUESTION
Front
What is the VSEPR theory?
Back
VSEPR (Valence Shell Electron Pair Repulsion) theory predicts the shape of molecules based on the repulsion between electron pairs in the valence shell.
7.
FLASHCARD QUESTION
Front
What is the VSEPR shape of PCl5?
Back
The VSEPR shape of PCl5 is trigonal bipyramidal.
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