Question 1

Place the following in order of increasing bond length. C-F C-S C-Cl

Accepted Answer

A) C-S < C-Cl < C-F 
B) C-Cl < C-F < C-S 
C) C-F < C-S < C-Cl 
D) C-F < C-Cl < C-S 
E) C-S < C-F < C-Cl 
A) C-S < C-Cl < C-F 
B) C-Cl < C-F < C-S 
C) C-F < C-S < C-Cl 
D) C-F < C-Cl < C-S 
E) C-S < C-F < C-Cl

Question 2

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 3

Place the following in order of increasing magnitude of lattice energy. MgO LiI CaS

Accepted Answer

A) CaS < MgO < LiI 
B) LiI < CaS < MgO 
C) MgO < CaS < LiI 
D) LiI < MgO < CaS 
E) MgO < LiI < CaS 
A) CaS < MgO < LiI 
B) LiI < CaS < MgO 
C) MgO < CaS < LiI 
D) LiI < MgO < CaS 
E) MgO < LiI < CaS

Question 4

A double covalent bond contains ________ of electrons.

Accepted Answer

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

Question 5

Identify the compound with the highest magnitude of lattice energy.

Accepted Answer

A) NaCl 
B) KCl 
C) LiCl 
D) CsCl 
A) NaCl 
B) KCl 
C) LiCl 
D) CsCl

Question 6

Identify the number of valence electrons for ICl5.

Accepted Answer

A) 36 
B) 40 
C) 42 
D) 44 
E) 46 
A) 36 
B) 40 
C) 42 
D) 44 
E) 46

Question 7

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 8

Draw the Lewis structure for CO32-, including any valid resonance structures. Which of the following statements is TRUE?

Accepted Answer

A) The CO32- ion contains one C-O single bond and two C=O double bonds. 
B) The CO32- ion contains two C-O single bonds and one C=O double bond. 
C) The CO32- ion contains three C-O double bonds. 
D) The CO32- ion contains two C-O single bonds and one C≡O triple bond. 
E) None of the above is true. 
A) The CO32- ion contains one C-O single bond and two C=O double bonds. 
B) The CO32- ion contains two C-O single bonds and one C=O double bond. 
C) The CO32- ion contains three C-O double bonds. 
D) The CO32- ion contains two C-O single bonds and one C≡O triple bond. 
E) None of the above is true.

Question 9

Which molecule or compound below contains an ionic bond?

Accepted Answer

A) CO2 
B) C2Cl4 
C) SiF4 
D) OCl2 
E) NH4NO3 
A) CO2 
B) C2Cl4 
C) SiF4 
D) OCl2 
E) NH4NO3

Question 10

Draw the best Lewis structure for Cl3⁻. What is the formal charge on the central Cl atom?

Accepted Answer

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

Question 11

Rank the following molecules in decreasing bond energy. Cl2 Br2 F2 I2

Accepted Answer

A) I2 > Br2 > Cl2 > F2 
B) Cl2 > Br2 > F2 > I2 
C) I2 > Cl2 > Br2 > F2 
D) Cl2 > I2 > F2 > Br2 
A) I2 > Br2 > Cl2 > F2 
B) Cl2 > Br2 > F2 > I2 
C) I2 > Cl2 > Br2 > F2 
D) Cl2 > I2 > F2 > Br2

Question 12

Identify the substance that conducts electricity.

Accepted Answer

A) NaCl dissolved in water 
B) solid NaCl 
C) water 
D) solid sugar 
E) sugar dissolved in water 
A) NaCl dissolved in water 
B) solid NaCl 
C) water 
D) solid sugar 
E) sugar dissolved in water

Question 13

Choose the best Lewis structure for PO43⁻.

Accepted Answer

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

Question 14

The phosphorus atom in PCl3 would be expected to have a

Accepted Answer

A) partial positive (δ+)charge. 
B) partial negative (δ-)charge. 
C) 3+ charge. 
D) 3- charge. 
A) partial positive (δ+)charge. 
B) partial negative (δ-)charge. 
C) 3+ charge. 
D) 3- charge.

Question 15

Choose the best Lewis structure for ICl5.

Accepted Answer

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

Question 16

Draw the Lewis structure for SO42⁻. How many equivalent resonance structures can be drawn?

Accepted Answer

A) 6 
B) 2 
C) 4 
D) 3 
E) 8 
A) 6 
B) 2 
C) 4 
D) 3 
E) 8

Question 17

A triple covalent bond contains ________ of electrons.

Accepted Answer

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

Question 18

Using periodic trends, place the following bonds in order of increasing ionic character. S-F Se-F O-F

Accepted Answer

A) Se-F < S-F < O-F 
B) S-F < Se-F < O-F 
C) O-F < Se-F < S-F 
D) Se-F < O-F < S-F 
E) O-F < S-F < Se-F 
A) Se-F < S-F < O-F 
B) S-F < Se-F < O-F 
C) O-F < Se-F < S-F 
D) Se-F < O-F < S-F 
E) O-F < S-F < Se-F

Question 19

Place the following in order of decreasing magnitude of lattice energy. KF MgS RbI

Accepted Answer

A) RbI > KF > MgS 
B) RbI > MgS > KF 
C) MgS > RbI > KF 
D) KF > RbI > MgS 
E) MgS > KF > RbI 
A) RbI > KF > MgS 
B) RbI > MgS > KF 
C) MgS > RbI > KF 
D) KF > RbI > MgS 
E) MgS > KF > RbI

Question 20

Which of the following reactions is associated with the lattice energy of Li2O (Δr     )?

Accepted Answer

A) Li2O(s)→ 2Li⁺(g)+ O2⁻(g) 
B) 2Li⁺(aq)+ O2⁻(aq)→ Li2O(s) 
C) 2Li⁺(g)+ O2⁻(g)→ Li2O(s) 
D) Li2O(s)→ 2Li⁺(aq)+ O2⁻(aq) 
E) 2Li(s)+   O2(g)→ Li2O(s) 
A) Li2O(s)→ 2Li⁺(g)+ O2⁻(g) 
B) 2Li⁺(aq)+ O2⁻(aq)→ Li2O(s) 
C) 2Li⁺(g)+ O2⁻(g)→ Li2O(s) 
D) Li2O(s)→ 2Li⁺(aq)+ O2⁻(aq) 
E) 2Li(s)+   O2(g)→ Li2O(s)

Exam 9: Chemical Bonding I: Lewis Theory

Place the following in order of increasing bond length. C-F C-S C-Cl

Which compound has the longest carbon-carbon bond length?

Place the following in order of increasing magnitude of lattice energy. MgO LiI CaS

A double covalent bond contains ________ of electrons.

Identify the compound with the highest magnitude of lattice energy.

Identify the number of valence electrons for ICl5.

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

Draw the Lewis structure for CO32-, including any valid resonance structures. Which of the following statements is TRUE?

Which molecule or compound below contains an ionic bond?

Draw the best Lewis structure for Cl3⁻. What is the formal charge on the central Cl atom?

Rank the following molecules in decreasing bond energy. Cl2 Br2 F2 I2

Identify the substance that conducts electricity.

Choose the best Lewis structure for PO43⁻.

The phosphorus atom in PCl3 would be expected to have a

Choose the best Lewis structure for ICl5.

Draw the Lewis structure for SO42⁻. How many equivalent resonance structures can be drawn?

A triple covalent bond contains ________ of electrons.

Using periodic trends, place the following bonds in order of increasing ionic character. S-F Se-F O-F

Place the following in order of decreasing magnitude of lattice energy. KF MgS RbI

Which of the following reactions is associated with the lattice energy of Li2O (Δr )?

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 Metallury

Transition Metals and Coordination Compounds

Filters

Identify the number of valence electrons for ICl₅.

Draw the Lewis structure for CO₃^2-, including any valid resonance structures. Which of the following statements is TRUE?

Draw the best Lewis structure for Cl₃^⁻. What is the formal charge on the central Cl atom?

Rank the following molecules in decreasing bond energy. Cl₂ Br₂ F₂ I₂

Choose the best Lewis structure for PO₄³⁻.

The phosphorus atom in PCl₃ would be expected to have a

Choose the best Lewis structure for ICl₅.

Draw the Lewis structure for SO₄²⁻. How many equivalent resonance structures can be drawn?

Which of the following reactions is associated with the lattice energy of Li₂O (Δ_r )?