Questions and Answers
The Lewis model predicts that the formula for a compound between fluorine and calcium is?
CaF2
The Lewis model predicts that the formula for a compound between potassium and sulfur is?
K2S
What is the correct Lewis structure for Br2?
: Br..⋅⋅ - Br..⋅⋅ :
What is the correct Lewis structure for O2?
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Lewis theory predicts that the formula for a compound made of aluminum and phosphorus is AlP.
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How many bonding electrons are in the Lewis structure of carbon monoxide, CO?
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The central atom in the chlorate anion, ClO3-, is surrounded by?
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When calculating the number of electrons for the Lewis structure of a polyatomic ion, subtract one electron for each negative charge.
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The correct Lewis structure for CO2 shows that the carbon atom has two sets of lone pair electrons.
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The Lewis structure, [: O..⋅⋅ - N..= O..⋅⋅] best represents?
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The ammonium ion contains 10 valence electrons.
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Which molecule below would have a Lewis structure that is an exception to the octet rule?
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Which set shows the correct resonance structures for SeO2?
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Which of the following atoms would most likely be terminal in a Lewis structure?
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Which one of the following molecules is NOT capable of having resonance structures?
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Choose the correct Lewis structure for each molecule or ion. Include resonance structures if necessary. a) SeO2; b) CO32-; c) ClO-; d) ClO2-
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Study Notes
Lewis Model Predictions
- The Lewis model predicts that the chemical formula for the compound formed between fluorine and calcium is CaF2.
- For potassium and sulfur, the predicted formula is K2S.
- The formula for a compound made of aluminum and phosphorus is predicted to be AlP.
Lewis Structures
- The correct Lewis structure for Br2 features each bromine atom with three lone pairs, depicted as:
: Br..⋅⋅ - Br..⋅⋅ :. - For O2, the Lewis structure is shown as:
O..⋅⋅=O..⋅⋅. - Carbon monoxide (CO) contains 6 bonding electrons in its Lewis structure.
Chlorate Anion and Electrons Calculation
- The central atom in the chlorate anion, ClO3-, is surrounded by three bonding pairs and one unshared pair of electrons.
- When calculating the number of electrons for the Lewis structure of a polyatomic ion, it's not necessary to subtract one electron for each negative charge.
Valence Electrons and Resonance Structures
- The Lewis structure for CO2 does not show the carbon atom with two sets of lone pair electrons.
- The ammonium ion is determined to not contain 10 valence electrons.
- Molecules that are exceptions to the octet rule include all atoms presented in the question.
Specific Structures and Terminal Atoms
- The correct resonance structures for SeO2 include:
O..⋅⋅ = Se..- O..⋅⋅ : ↔ : O..⋅⋅ - Se..= O..⋅⋅. - Hydrogen atoms are most likely to be terminal in a Lewis structure due to their single bonding capability.
- H2O is not capable of having resonance structures, unlike other molecules discussed.
Summary of Provided Structures
- Several molecules require correct Lewis structures, including SeO2, CO32-, ClO-, and ClO2-, though specific structures are not detailed.
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Description
Test your knowledge with these flashcards covering key concepts from Chapter 10 in Chemistry. Focus on the Lewis model and molecular structure predictions for various compounds. Challenge yourself to recall formulas and draw Lewis structures for notable molecules.
