Chemistry Chapter 10 Flashcards

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.