MP3: Three weeks test AP chemistry
Flashcard
•
Chemistry
•
10th Grade
•
Hard
Wayground Content
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a resonance structure?
Back
A resonance structure is one of two or more valid Lewis structures for a molecule that cannot be represented accurately by a single Lewis structure. Resonance structures differ only in the placement of electrons.
2.
FLASHCARD QUESTION
Front
What is the bond order of a molecule?
Back
Bond order is the number of chemical bonds between a pair of atoms. It can be calculated as the number of bonding pairs of electrons minus the number of antibonding pairs, divided by two.
3.
FLASHCARD QUESTION
Front
How many resonance structures can the nitrate ion (NO3-) have?
Back
The nitrate ion (NO3-) has three resonance structures.
4.
FLASHCARD QUESTION
Front
What is the bond angle in a trigonal planar molecule?
Back
The bond angle in a trigonal planar molecule is approximately 120 degrees.
5.
FLASHCARD QUESTION
Front
What is the significance of bond length in resonance structures?
Back
In resonance structures, bond lengths can vary. A bond that is shorter indicates a stronger bond, while a longer bond suggests a weaker bond. In resonance, bonds may have characteristics of both.
6.
FLASHCARD QUESTION
Front
What is the molecular geometry of CCl4?
Back
The molecular geometry of CCl4 (carbon tetrachloride) is tetrahedral.
7.
FLASHCARD QUESTION
Front
How many lone pairs are present in HCl?
Back
HCl has 3 lone pairs on the chlorine atom.
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