Question 1

How many of the following molecules contain at least one pi bond? C2H6 Cl2CO C2Cl4 SeS3

Accepted Answer

A) 0 
B) 1 
C) 3 
D) 4 
E) 2 
A) 0 
B) 1 
C) 3 
D) 4 
E) 2

Question 2

Give the approximate bond angle for a molecule with tetrahedral electron geometry and trigonal pyramidal molecular geometry.

Accepted Answer

A) 180° 
B) <180° 
C) <109.5° 
D) 109.5° 
E) <120° 
A) 180° 
B) <180° 
C) <109.5° 
D) 109.5° 
E) <120°

Question 3

How many of the following molecules are polar? XeCl2 COF2 PCl4F SF6

Accepted Answer

A) 0 
B) 3 
C) 1 
D) 2 
E) 4 
A) 0 
B) 3 
C) 1 
D) 2 
E) 4

Question 4

Draw the Lewis structure for C2H2. What is the hybridization on the C atoms?

Accepted Answer

A) sp 
B) sp3d2 
C) sp3d 
D) sp3 
E) sp2 
A) sp 
B) sp3d2 
C) sp3d 
D) sp3 
E) sp2

Question 5

Choose the compound below that contains at least one polar covalent bond but is nonpolar.

Accepted Answer

A) HCN 
B) CF4 
C) SeBr4 
D) ICl3 
E) Both B and C are nonpolar and contain a polar covalent bond. 
A) HCN 
B) CF4 
C) SeBr4 
D) ICl3 
E) Both B and C are nonpolar and contain a polar covalent bond.

Question 6

Determine the molecular geometry for the molecule XeF4.

Accepted Answer

A) Square planar 
B) Tetrahedral 
C) T-shaped 
D) Square pyramidal 
E) Trigonal planar 
A) Square planar 
B) Tetrahedral 
C) T-shaped 
D) Square pyramidal 
E) Trigonal planar

Question 7

Draw the Lewis structure for BF3. What is the hybridization on the B atom?

Accepted Answer

A) sp 
B) sp3d2 
C) sp3d 
D) sp3 
E) sp2 
A) sp 
B) sp3d2 
C) sp3d 
D) sp3 
E) sp2

Question 8

Determine the electron geometry (eg)and molecular geometry (mg)of the underlined atom CH3OCH3.

Accepted Answer

A) eg = tetrahedral, mg = tetrahedral 
B) eg = linear, mg = linear 
C) eg = tetrahedral, mg = bent 
D) eg = trigonal bipyramidal, mg = tetrahedral 
E) eg = octahedral, mg = square planar 
A) eg = tetrahedral, mg = tetrahedral 
B) eg = linear, mg = linear 
C) eg = tetrahedral, mg = bent 
D) eg = trigonal bipyramidal, mg = tetrahedral 
E) eg = octahedral, mg = square planar

How many of the following molecules contain at least one pi bond? C₂H₆ Cl₂CO C₂Cl₄ SeS₃

Give the approximate bond angle for a molecule with tetrahedral electron geometry and trigonal pyramidal molecular geometry.

How many of the following molecules are polar? XeCl₂ COF₂ PCl₄F SF₆

Draw the Lewis structure for C₂H₂. What is the hybridization on the C atoms?

Choose the compound below that contains at least one polar covalent bond but is nonpolar.

Determine the molecular geometry for the molecule XeF₄.

Draw the Lewis structure for BF₃. What is the hybridization on the B atom?

Determine the electron geometry (eg)and molecular geometry (mg)of the underlined atom CH₃OCH₃.

Units of Measurement for Physical and Chemical Change

Atoms and Elements

Molecules, Compounds, and Nomenclature

Chemical Reactions and Stoichiometry

Gases

Thermochemistry

The Quantum-Mechanical Model of the Atom

Periodic Properties of the Elements

Chemical Bonding I: Lewis Theory

Liquids, Solids, and Intermolecular Forces

Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Aqueous Ionic Equilibrium

Gibbs Energy and Thermodynamics

Electrochemistry

Radioactivity and Nuclear Chemistry

Organic Chemistry I: Structures

Organic Chemistry II: Reactions

Biochemistry

Chemistry of the Nonmetals

Metals and Metallury

Transition Metals and Coordination Compounds

Filters

Exam 10: Chemical Bonding Ii: Molecular Shapes, Valence Bond Theory, and Molecular Orbital Theory

How many of the following molecules contain at least one pi bond? C2H6 Cl2CO C2Cl4 SeS3

Give the approximate bond angle for a molecule with tetrahedral electron geometry and trigonal pyramidal molecular geometry.

How many of the following molecules are polar? XeCl2 COF2 PCl4F SF6

Draw the Lewis structure for C2H2. What is the hybridization on the C atoms?

Choose the compound below that contains at least one polar covalent bond but is nonpolar.

Determine the molecular geometry for the molecule XeF4.

Draw the Lewis structure for BF3. What is the hybridization on the B atom?

Determine the electron geometry (eg)and molecular geometry (mg)of the underlined atom CH3OCH3.

Units of Measurement for Physical and Chemical Change

Atoms and Elements

Molecules, Compounds, and Nomenclature

Chemical Reactions and Stoichiometry

Gases

Thermochemistry

The Quantum-Mechanical Model of the Atom

Periodic Properties of the Elements

Chemical Bonding I: Lewis Theory

Liquids, Solids, and Intermolecular Forces

Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Aqueous Ionic Equilibrium

Gibbs Energy and Thermodynamics

Electrochemistry

Radioactivity and Nuclear Chemistry

Organic Chemistry I: Structures

Organic Chemistry II: Reactions

Biochemistry

Chemistry of the Nonmetals

Metals and Metallury

Transition Metals and Coordination Compounds

Filters

How many of the following molecules contain at least one pi bond? C₂H₆ Cl₂CO C₂Cl₄ SeS₃

How many of the following molecules are polar? XeCl₂ COF₂ PCl₄F SF₆

Draw the Lewis structure for C₂H₂. What is the hybridization on the C atoms?

Determine the molecular geometry for the molecule XeF₄.

Draw the Lewis structure for BF₃. What is the hybridization on the B atom?

Determine the electron geometry (eg)and molecular geometry (mg)of the underlined atom CH₃OCH₃.