Question 1

Define dipole moment.

Accepted Answer

Dipole moment is the measured

Question 2

Draw the best Lewis structure for the free radical NO2. What is the formal charge on the N?

Accepted Answer

A)  0 
B)  +1 
C)  -1 
D)  +2 
E)  -2 
A)  0 
B)  +1 
C)  -1 
D)  +2 
E)  -2

Question 3

Which compound has the longest carbon-carbon bond length?

Accepted Answer

A)  CH3CH3 
B)  CH2CH2 
C)  HCCH 
D)  All bond lengths are the same. 
A)  CH3CH3 
B)  CH2CH2 
C)  HCCH 
D)  All bond lengths are the same.

Question 4

Which of the following represent the Lewis structure for Br⁻?

Accepted Answer

A)    
B)    
C)    
D)    
E)    
A)    
B)    
C)    
D)    
E)

Question 5

Place the following elements in order of increasing electronegativity. K Cs P

Accepted Answer

A)  P < K < Cs 
B)  K < P < Cs 
C)  Cs < P < K 
D)  Cs < K < P 
E)  P < Cs < K 
A)  P < K < Cs 
B)  K < P < Cs 
C)  Cs < P < K 
D)  Cs < K < P 
E)  P < Cs < K

Question 6

Choose the compound below that should have the highest melting point according to the ionic bonding model.

Accepted Answer

A)  SrI2 
B)  MgF2 
C)  CaCl2 
D)  SrF2 
E)  SrBr2 
A)  SrI2 
B)  MgF2 
C)  CaCl2 
D)  SrF2 
E)  SrBr2

Question 7

Which of the following represent the Lewis structure for S2⁻?

Accepted Answer

A)    
B)    
C)    
D)    
E)    
A)    
B)    
C)    
D)    
E)

Question 8

Identify the compound with the lowest magnitude of lattice energy.

Accepted Answer

A)  KCl 
B)  KBr 
C)  SrO 
D)  CaO 
A)  KCl 
B)  KBr 
C)  SrO 
D)  CaO

Question 9

Identify the weakest bond.

Accepted Answer

A)  single covalent bond 
B)  double covalent bond 
C)  triple covalent bond 
D)  All of the above bonds are the same strength. 
A)  single covalent bond 
B)  double covalent bond 
C)  triple covalent bond 
D)  All of the above bonds are the same strength.

Question 10

Identify the number of valence electrons for XeI2.

Accepted Answer

A)  22 
B)  20 
C)  18 
D)  24 
A)  22 
B)  20 
C)  18 
D)  24

Question 11

Place the following in order of increasing bond length. NO2⁻ NO3⁻ NO

Accepted Answer

A)  NO 2⁻ 3⁻ 
B)  NO2⁻ 3⁻ 3⁻ 2⁻ 
D)  NO 3⁻ 2⁻ 
E)  NO3⁻ 2⁻ < NO 
A)  NO 2⁻ 3⁻ 
B)  NO2⁻ 3⁻ 3⁻ 2⁻ 
D)  NO 3⁻ 2⁻ 
E)  NO3⁻ 2⁻ < NO

Question 12

Give the number of valence electrons for SO42-.

Accepted Answer

A)  32 
B)  30 
C)  34 
D)  28 
E)  36 
A)  32 
B)  30 
C)  34 
D)  28 
E)  36

Question 13

Use the bond energies provided to estimate ?S1U1B1rS1U1B0H° for the reaction below. CS1U1B12S1U1B0HS1U1B14S1U1B0(g) + HS1U1B12S1U1B0(g) ? CS1U1B12S1U1B0HS1U1B16S1U1B0(g) ?S1U1B1rS1U1B0H°= ?
Bond Bond Energy (kJ molS1U1P1-1S1S1P0)
C-C 347
C-H 414
C=C 611
C?C 837
H-H 436

Accepted Answer

A)  -128 kJ molS1U1P1-1S1S1P0 
B)  +98 kJ molS1U1P1-1S1S1P0 
C)  +700 kJ molS1U1P1-1S1S1P0 
D)  -102 kJ molS1U1P1-1S1S1P0 
E)  -166 kJ molS1U1P1-1S1S1P0 
A)  -128 kJ molS1U1P1-1S1S1P0 
B)  +98 kJ molS1U1P1-1S1S1P0 
C)  +700 kJ molS1U1P1-1S1S1P0 
D)  -102 kJ molS1U1P1-1S1S1P0 
E)  -166 kJ molS1U1P1-1S1S1P0

Question 14

Identify an ionic bond.

Accepted Answer

A)  Electrons are pooled. 
B)  Electrons are shared. 
C)  Electrons are transferred. 
D)  Electrons are gained. 
E)  Electrons are lost. 
A)  Electrons are pooled. 
B)  Electrons are shared. 
C)  Electrons are transferred. 
D)  Electrons are gained. 
E)  Electrons are lost.

Question 15

Define bond energy.

Accepted Answer

Bond energy is the e

Define dipole moment.

Draw the best Lewis structure for the free radical NO₂. What is the formal charge on the N?

Which compound has the longest carbon-carbon bond length?

Which of the following represent the Lewis structure for Br⁻?

Place the following elements in order of increasing electronegativity. K Cs P

Choose the compound below that should have the highest melting point according to the ionic bonding model.

Which of the following represent the Lewis structure for S²⁻?

Identify the compound with the lowest magnitude of lattice energy.

Identify the weakest bond.

Identify the number of valence electrons for XeI₂.

Place the following in order of increasing bond length. NO₂⁻ NO₃⁻ NO

Give the number of valence electrons for SO₄^2-.

Use the bond energies provided to estimate ?_rH° for the reaction below. C₂H₄(g) + H₂(g) ? C₂H₆(g) ?_rH°= ? Bond Bond Energy (kJ mol^-1) C-C 347 C-H 414 C=C 611 C?C 837 H-H 436

Identify an ionic bond.

Define bond energy.

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 Ii: Molecular Shapes, Valence Bond Theory, and Molecular Orbital 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 Metallurgy

Transition Metals and Coordination Compounds

Filters

Exam 9: Chemical Bonding I: Lewis Theory

Define dipole moment.

Draw the best Lewis structure for the free radical NO2. What is the formal charge on the N?

Which compound has the longest carbon-carbon bond length?

Which of the following represent the Lewis structure for Br⁻?

Place the following elements in order of increasing electronegativity. K Cs P

Choose the compound below that should have the highest melting point according to the ionic bonding model.

Which of the following represent the Lewis structure for S2⁻?

Identify the compound with the lowest magnitude of lattice energy.

Identify the weakest bond.

Identify the number of valence electrons for XeI2.

Place the following in order of increasing bond length. NO2⁻ NO3⁻ NO

Give the number of valence electrons for SO42-.

Use the bond energies provided to estimate ?rH° for the reaction below. C2H4(g) + H2(g) ? C2H6(g) ?rH°= ? Bond Bond Energy (kJ mol-1) C-C 347 C-H 414 C=C 611 C?C 837 H-H 436

Identify an ionic bond.

Define bond energy.

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 Ii: Molecular Shapes, Valence Bond Theory, and Molecular Orbital 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 Metallurgy

Transition Metals and Coordination Compounds

Filters

Draw the best Lewis structure for the free radical NO₂. What is the formal charge on the N?

Which of the following represent the Lewis structure for S²⁻?

Identify the number of valence electrons for XeI₂.

Place the following in order of increasing bond length. NO₂⁻ NO₃⁻ NO

Give the number of valence electrons for SO₄^2-.

Use the bond energies provided to estimate ?_rH° for the reaction below. C₂H₄(g) + H₂(g) ? C₂H₆(g) ?_rH°= ? Bond Bond Energy (kJ mol^-1) C-C 347 C-H 414 C=C 611 C?C 837 H-H 436