Question 1

Describe the Lewis Dot structure for Al3+.

Accepted Answer

The Lewis dot struct

Question 2

Which of the following processes is endothermic?

Accepted Answer

A) the reaction associated with the lattice energy of LiCl 
B) the reaction associated with the ionization energy of potassium 
C) the reaction associated with the heat of formation of CaS 
D) the formation of F2 from its elements in their standard states 
E) None of the above are endothermic. 
A) the reaction associated with the lattice energy of LiCl 
B) the reaction associated with the ionization energy of potassium 
C) the reaction associated with the heat of formation of CaS 
D) the formation of F2 from its elements in their standard states 
E) None of the above are endothermic.

Question 3

Use the data to fill in the blank in the table with one of the choices given below.

Accepted Answer

A) Electrons transferred 
B) Electrons shared 
C) Electrons pooled 
D) Electrons shared and pooled 
A) Electrons transferred 
B) Electrons shared 
C) Electrons pooled 
D) Electrons shared and pooled

Question 4

Use Lewis theory to determine the chemical formula for the compound formed between Rb and S.

Accepted Answer

A) RbS 
B) RbS2 
C) Rb2S 
D) Rb2S3 
E) Rb3S2 
A) RbS 
B) RbS2 
C) Rb2S 
D) Rb2S3 
E) Rb3S2

Question 5

Choose the best Lewis structure for BeF2.

Accepted Answer

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

Question 6

Place the following elements in order of increasing electronegativity.
Na Rb P

Accepted Answer

A) P < Na < Rb 
B) Na < P < Rb 
C) Rb < P < Na 
D) Rb < Na < P 
E) P < Rb < Na 
A) P < Na < Rb 
B) Na < P < Rb 
C) Rb < P < Na 
D) Rb < Na < P 
E) P < Rb < Na

Question 7

How many lone pairs are on the Br atom in BrCl2-?

Accepted Answer

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

Question 8

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 9

Which of the following reactions is associated with the lattice energy of Li2O (ΔH°latt)?

Accepted Answer

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

Question 10

Identify an ionic bond.

Accepted Answer

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

Question 11

Identify the most electronegative element.

Accepted Answer

A) Fr 
B) At 
C) H 
D) F 
A) Fr 
B) At 
C) H 
D) F

Question 12

List the following compounds in decreasing electronegativity difference.
Cl2 HCl NaCl

Accepted Answer

A) NaCl > Cl2 > HCl 
B) Cl2 > HCl > NaCl 
C) HCl > NaCl > Cl2 
D) NaCl > HCl > Cl2 
A) NaCl > Cl2 > HCl 
B) Cl2 > HCl > NaCl 
C) HCl > NaCl > Cl2 
D) NaCl > HCl > Cl2

Question 13

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

Question 14

Choose the best Lewis structure for NO3⁻.

Accepted Answer

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

Question 15

Choose the best Lewis structure for NH4⁺.

Accepted Answer

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

Question 16

Liquid water when boiled at 100°C gets converted to water vapor.Which of the following statements is correct for this phase transition?

Accepted Answer

A) The covalent bonds between hydrogen and oxygen atoms are broken. 
B) The intermolecular hydrogen bonds between water molecules are broken. 
C) The covalent bonds between hydrogen and oxygen atoms become weaker. 
D) The bond distance between hydrogen and oxygen atoms increases. 
A) The covalent bonds between hydrogen and oxygen atoms are broken. 
B) The intermolecular hydrogen bonds between water molecules are broken. 
C) The covalent bonds between hydrogen and oxygen atoms become weaker. 
D) The bond distance between hydrogen and oxygen atoms increases.

Question 17

Match the following.
-C=N

Accepted Answer

A) weakest ionic bond 
B) strongest covalent bond 
C) metallic bond 
D) highest melting point 
E) longest covalent bond
F)Na-Br
G)C-F 
A) weakest ionic bond 
B) strongest covalent bond 
C) metallic bond 
D) highest melting point 
E) longest covalent bond
F)Na-Br
G)C-F

Question 18

Explain why the lattice energy of MgS is approximately 4 times as large as that of NaCl.

Accepted Answer

The Mg²⁺ and Na⁺ ion are similar in size

Question 19

Choose the bond below that is least polar.

Accepted Answer

A) P-F 
B) C-Br 
C) C-F 
D) C-I 
E) C-Cl 
A) P-F 
B) C-Br 
C) C-F 
D) C-I 
E) C-Cl

Question 20

Define dipole moment.

Accepted Answer

Dipole moment is the measured

Describe the Lewis Dot structure for Al³⁺.

Which of the following processes is endothermic?

Use the data to fill in the blank in the table with one of the choices given below.

Use Lewis theory to determine the chemical formula for the compound formed between Rb and S.

Choose the best Lewis structure for BeF₂.

Place the following elements in order of increasing electronegativity. Na Rb P

How many lone pairs are on the Br atom in BrCl₂^-?

Which molecule or compound below contains an ionic bond?

Which of the following reactions is associated with the lattice energy of Li₂O (ΔH°_latt)?

Identify an ionic bond.

Identify the most electronegative element.

List the following compounds in decreasing electronegativity difference. Cl₂ HCl NaCl

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 NO₃⁻.

Choose the best Lewis structure for NH₄⁺.

Liquid water when boiled at 100^°C gets converted to water vapor.Which of the following statements is correct for this phase transition?

Match the following. -C=N

Explain why the lattice energy of MgS is approximately 4 times as large as that of NaCl.

Choose the bond below that is least polar.

Define dipole moment.

Matter, Measurement, and Problem Solving

Atoms and Elements

Molecules, Compounds and Chemical Equations

Chemical Quantities and Aqueous Reactions

Gases

Thermochemistry

The Quantum-Mechanical Model of the Atom

Periodic Properties of the Elements

Chemical Bonding II: Molecular Shapes, Valence Bond Theory, and

Liquids, Solids, and Intermolecular Forces

Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Aqueous Ionic Equilibrium

Free Energy and Thermodynamics

Electrochemistry

Radioactivity and Nuclear Chemistry

Filters

Exam 9: Chemical Bonding I: Lewis Theory

Describe the Lewis Dot structure for Al3+.

Which of the following processes is endothermic?

Use the data to fill in the blank in the table with one of the choices given below.

Use Lewis theory to determine the chemical formula for the compound formed between Rb and S.

Choose the best Lewis structure for BeF2.

Place the following elements in order of increasing electronegativity. Na Rb P

How many lone pairs are on the Br atom in BrCl2-?

Which molecule or compound below contains an ionic bond?

Which of the following reactions is associated with the lattice energy of Li2O (ΔH°latt)?

Identify an ionic bond.

Identify the most electronegative element.

List the following compounds in decreasing electronegativity difference. Cl2 HCl NaCl

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

Choose the best Lewis structure for NO3⁻.

Choose the best Lewis structure for NH4⁺.

Liquid water when boiled at 100°C gets converted to water vapor.Which of the following statements is correct for this phase transition?

Match the following. -C=N

Explain why the lattice energy of MgS is approximately 4 times as large as that of NaCl.

Choose the bond below that is least polar.

Define dipole moment.

Matter, Measurement, and Problem Solving

Atoms and Elements

Molecules, Compounds and Chemical Equations

Chemical Quantities and Aqueous Reactions

Gases

Thermochemistry

The Quantum-Mechanical Model of the Atom

Periodic Properties of the Elements

Chemical Bonding II: Molecular Shapes, Valence Bond Theory, and

Liquids, Solids, and Intermolecular Forces

Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Aqueous Ionic Equilibrium

Free Energy and Thermodynamics

Electrochemistry

Radioactivity and Nuclear Chemistry

Filters

Describe the Lewis Dot structure for Al³⁺.

Choose the best Lewis structure for BeF₂.

How many lone pairs are on the Br atom in BrCl₂^-?

Which of the following reactions is associated with the lattice energy of Li₂O (ΔH°_latt)?

List the following compounds in decreasing electronegativity difference. Cl₂ HCl NaCl

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 NO₃⁻.

Choose the best Lewis structure for NH₄⁺.

Liquid water when boiled at 100^°C gets converted to water vapor.Which of the following statements is correct for this phase transition?