Question 1

Draw the resonance structure that has the lowest formal charge on each atom for ClO2-. What is the formal charge on chlorine?

Accepted Answer

A)  -1 
B)  +1 
C)  0 
D)  +2 
E)  +3 
A)  -1 
B)  +1 
C)  0 
D)  +2 
E)  +3

Question 2

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 3

Identify the longest bond.

Accepted Answer

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

Question 4

Which of the following elements can form hypercoordinate compounds?

Accepted Answer

A)  Se 
B)  C 
C)  Li 
D)  F 
A)  Se 
B)  C 
C)  Li 
D)  F

Question 5

Draw the resonance structure that has the lowest formal charge on each atom for BrO2-. What is the formal charge on bromine?

Accepted Answer

A)  -1 
B)  +1 
C)  0 
D)  +2 
E)  +3 
A)  -1 
B)  +1 
C)  0 
D)  +2 
E)  +3

Question 6

Which of the following compounds is hypercoordinate?

Accepted Answer

A)  CsI 
B)  SnO2 
C)  ClF5 
D)  ClF 
A)  CsI 
B)  SnO2 
C)  ClF5 
D)  ClF

Question 7

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 three C-O bonds that are equivalent to 4/3 bonds. 
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 three C-O bonds that are equivalent to 4/3 bonds. 
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 8

Choose the best Lewis structure for ICl5.

Accepted Answer

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

Question 9

Which of the following represent the Lewis structure for Mg?

Accepted Answer

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

Question 10

How many lone pairs of electrons are on the As atom in As Cl3?

Accepted Answer

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

Question 11

Match the following.
-C=N

Accepted Answer

A) strongest covalent bond 
B) longest covalent bond 
C) weakest ionic bond 
D) metallic bond 
E) highest melting point 
A) strongest covalent bond 
B) longest covalent bond 
C) weakest ionic bond 
D) metallic bond 
E) highest melting point

Question 12

Use the data given below to construct a Born-Haber cycle to determine the bond energy of O2.

Accepted Answer

A)  426 kJ mol-1 
B)  249 kJ mol-1 
C)  852 kJ mol-1 
D)  498 kJ mol-1 
E)  356 kJ mol-1 
A)  426 kJ mol-1 
B)  249 kJ mol-1 
C)  852 kJ mol-1 
D)  498 kJ mol-1 
E)  356 kJ mol-1

Question 13

Choose the bond below that is the strongest.

Accepted Answer

A)  C-F 
B)  C=O 
C)  C-I 
D)  I-I 
E)  C≡N 
A)  C-F 
B)  C=O 
C)  C-I 
D)  I-I 
E)  C≡N

Question 14

Choose the bond below that is the weakest.

Accepted Answer

A)  C≡O 
B)  N≡N 
C)  C-I 
D)  C=S 
E)  K-Cl 
A)  C≡O 
B)  N≡N 
C)  C-I 
D)  C=S 
E)  K-Cl

Question 15

Draw the best Lewis structure for BrO4⁻. What is the formal charge on bromine?

Accepted Answer

A)  -1 
B)  +1 
C)  0 
D)  +2 
E)  +3 
A)  -1 
B)  +1 
C)  0 
D)  +2 
E)  +3

Question 16

Use Lewis theory to determine the chemical formula for the compound formed between Al and O.

Accepted Answer

A)  Al3O2 
B)  Al2O3 
C)  AlO2 
D)  Al2O 
E)  AlO 
A)  Al3O2 
B)  Al2O3 
C)  AlO2 
D)  Al2O 
E)  AlO

Question 17

Choose the best Lewis structure for XeI2.

Accepted Answer

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

Question 18

Give the number of lone pairs for BF3.

Accepted Answer

A)  16 
B)  8 
C)  14 
D)  10 
E)  9 
A)  16 
B)  8 
C)  14 
D)  10 
E)  9

Question 19

Place the following in order of decreasing magnitude of lattice energy. NaF RbBr KCl

Accepted Answer

A)  RbBr > NaF > KCl 
B)  NaF > KCl > RbBr 
C)  KCl > NaF > RbBr 
D)  NaF > RbBr > KCl 
E)  RbBr > KCl > NaF 
A)  RbBr > NaF > KCl 
B)  NaF > KCl > RbBr 
C)  KCl > NaF > RbBr 
D)  NaF > RbBr > KCl 
E)  RbBr > KCl > NaF

Question 20

Draw the resonance structure that has the lowest formal charge on each atom for NO3-. What is the formal charge on nitrogen?

Accepted Answer

A)  -1 
B)  +1 
C)  0 
D)  +2 
E)  +3 
A)  -1 
B)  +1 
C)  0 
D)  +2 
E)  +3

Exam 9: Chemical Bonding I: Lewis Theory

Draw the resonance structure that has the lowest formal charge on each atom for ClO2-. What is the formal charge on chlorine?

A triple covalent bond contains ________ of electrons.

Identify the longest bond.

Which of the following elements can form hypercoordinate compounds?

Draw the resonance structure that has the lowest formal charge on each atom for BrO2-. What is the formal charge on bromine?

Which of the following compounds is hypercoordinate?

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

Choose the best Lewis structure for ICl5.

Which of the following represent the Lewis structure for Mg?

How many lone pairs of electrons are on the As atom in As Cl3?

Match the following. -C=N

Use the data given below to construct a Born-Haber cycle to determine the bond energy of O2.

Choose the bond below that is the strongest.

Choose the bond below that is the weakest.

Draw the best Lewis structure for BrO4⁻. What is the formal charge on bromine?

Use Lewis theory to determine the chemical formula for the compound formed between Al and O.

Choose the best Lewis structure for XeI2.

Give the number of lone pairs for BF3.

Place the following in order of decreasing magnitude of lattice energy. NaF RbBr KCl

Draw the resonance structure that has the lowest formal charge on each atom for NO3-. What is the formal charge on nitrogen?

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 resonance structure that has the lowest formal charge on each atom for ClO₂^-. What is the formal charge on chlorine?

Draw the resonance structure that has the lowest formal charge on each atom for BrO₂^-. What is the formal charge on bromine?

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

Choose the best Lewis structure for ICl₅.

How many lone pairs of electrons are on the As atom in As Cl₃?

Use the data given below to construct a Born-Haber cycle to determine the bond energy of O₂.

Draw the best Lewis structure for BrO₄⁻. What is the formal charge on bromine?

Choose the best Lewis structure for XeI₂.

Give the number of lone pairs for BF₃.

Draw the resonance structure that has the lowest formal charge on each atom for NO₃^-. What is the formal charge on nitrogen?