Question 1

Choose the bond below that is the strongest.

Accepted Answer

A)  N=O 
B)  N-Br 
C)  N-O 
D)  N-S 
E)  N=N 
A)  N=O 
B)  N-Br 
C)  N-O 
D)  N-S 
E)  N=N

Question 2

Choose the bond below that is most polar.

Accepted Answer

A)  C-N 
B)  C-F 
C)  N-O 
D)  C-P 
E)  H-H 
A)  C-N 
B)  C-F 
C)  N-O 
D)  C-P 
E)  H-H

Question 3

Which of the following statements is TRUE?

Accepted Answer

A)  A covalent bond is formed through the transfer of electrons from one atom to another. 
B)  A pair of electrons involved in a covalent bond is sometimes referred to as a "lone pair." 
C)  It is not possible for two atoms to share more than two electrons. 
D)  Single bonds are shorter than double bonds. 
E)  In a covalent bond, the shared electrons interact with the nuclei of both of the bonding atoms, thus lowering their potential energy. 
A)  A covalent bond is formed through the transfer of electrons from one atom to another. 
B)  A pair of electrons involved in a covalent bond is sometimes referred to as a "lone pair." 
C)  It is not possible for two atoms to share more than two electrons. 
D)  Single bonds are shorter than double bonds. 
E)  In a covalent bond, the shared electrons interact with the nuclei of both of the bonding atoms, thus lowering their potential energy.

Question 4

Place the following elements in order of increasing electronegativity. Cr Cs C

Accepted Answer

A)  C < Cr < Cs 
B)  Cr < C < Cs 
C)  Cs < C < Cr 
D)  Cs < Cr < C 
E)  C < Cs < Cr 
A)  C < Cr < Cs 
B)  Cr < C < Cs 
C)  Cs < C < Cr 
D)  Cs < Cr < C 
E)  C < Cs < Cr

Question 5

Define bond energy.

Accepted Answer

Bond energy is the e

Question 6

Choose the best Lewis structure for PO43⁻.

Accepted Answer

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

Question 7

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 8

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

Accepted Answer

A)  Cs(s) +    Cl2(g) → CsCl(s) 
B)  CsCl(s) → Cs⁺(g) + Cl⁻(g) 
C)  CsCl(s) → Cs(s) +    Cl2(g) 
D)  CsCl(s) → Cs⁺(aq) +Cl⁻(aq) 
E)  Cs⁺(g) + Cl⁻(g) → CsCl(s) 
A)  Cs(s) +    Cl2(g) → CsCl(s) 
B)  CsCl(s) → Cs⁺(g) + Cl⁻(g) 
C)  CsCl(s) → Cs(s) +    Cl2(g) 
D)  CsCl(s) → Cs⁺(aq) +Cl⁻(aq) 
E)  Cs⁺(g) + Cl⁻(g) → CsCl(s)

Question 9

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

Accepted Answer

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

Question 10

Identify the compound with ionic bonding.

Accepted Answer

A)  LiBr 
B)  Na 
C)  H2O 
D)  Ne 
E)  O 
A)  LiBr 
B)  Na 
C)  H2O 
D)  Ne 
E)  O

Question 11

Give the number of valence electrons for CH2F2.

Accepted Answer

A)  16 
B)  18 
C)  20 
D)  22 
E)  40 
A)  16 
B)  18 
C)  20 
D)  22 
E)  40

Question 12

Identify the compound with the highest magnitude of lattice energy.

Accepted Answer

A)  MgBr2 
B)  BaBr2 
C)  SrBr2 
D)  CsBr2 
A)  MgBr2 
B)  BaBr2 
C)  SrBr2 
D)  CsBr2

Question 13

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

Accepted Answer

A)  LiS 
B)  LiS2 
C)  Li2S 
D)  Li2S3 
E)  Li3S2 
A)  LiS 
B)  LiS2 
C)  Li2S 
D)  Li2S3 
E)  Li3S2

Question 14

Draw the Lewis structure for NO2⁻ including any valid resonance structures.Describe the resonance hybrid of the nitrite ion.

Accepted Answer

A)  The nitrite ion contains one N-O single bond and one N   O double bond. 
B)  The nitrite ion contains two N-O bonds that are equivalent to 1   bonds. 
C)  The nitrite ion contains two N   O double bonds. 
D)  The nitrite ion contains two N-O single bonds. 
E)  None of the above is true. 
A)  The nitrite ion contains one N-O single bond and one N   O double bond. 
B)  The nitrite ion contains two N-O bonds that are equivalent to 1   bonds. 
C)  The nitrite ion contains two N   O double bonds. 
D)  The nitrite ion contains two N-O single bonds. 
E)  None of the above is true.

Question 15

Give the number of valence electrons for SCl4.

Accepted Answer

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

Question 16

Using periodic trends,place the following bonds in order of decreasing ionic character. Sb-I P-I As-I

Accepted Answer

A)  Sb-I > As-I > P-I 
B)  As-I > Sb-I > P-I 
C)  Sb-I > P-I > As-I 
D)  P-I > As-I > Sb-I 
E)  (Sb-I > P-I > As-I) 
A)  Sb-I > As-I > P-I 
B)  As-I > Sb-I > P-I 
C)  Sb-I > P-I > As-I 
D)  P-I > As-I > Sb-I 
E)  (Sb-I > P-I > As-I)

Question 17

Place the following elements in order of increasing electronegativity. Ba C Sc

Accepted Answer

A)  Ba < Sc < C 
B)  Sc < C < Ba 
C)  Ba < C < Sc 
D)  C < Ba < Sc 
E)  C < Sc < Ba 
A)  Ba < Sc < C 
B)  Sc < C < Ba 
C)  Ba < C < Sc 
D)  C < Ba < Sc 
E)  C < Sc < Ba

Question 18

Define dipole moment.

Accepted Answer

Dipole moment is the measured

Question 19

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 20

The compound BrCl contains

Accepted Answer

A)  ionic bonds. 
B)  nonpolar covalent bonds. 
C)  polar covalent bonds with partial negative charges on the Cl atoms. 
D)  polar covalent bonds with partial negative charges on the Br atoms. 
A)  ionic bonds. 
B)  nonpolar covalent bonds. 
C)  polar covalent bonds with partial negative charges on the Cl atoms. 
D)  polar covalent bonds with partial negative charges on the Br atoms.

Exam 9: Chemical Bonding I: Lewis Theory

Choose the bond below that is the strongest.

Choose the bond below that is most polar.

Which of the following statements is TRUE?

Place the following elements in order of increasing electronegativity. Cr Cs C

Define bond energy.

Choose the best Lewis structure for PO43⁻.

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 CsCl (ΔH°latt)?

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

Identify the compound with ionic bonding.

Give the number of valence electrons for CH2F2.

Identify the compound with the highest magnitude of lattice energy.

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

Draw the Lewis structure for NO2⁻ including any valid resonance structures.Describe the resonance hybrid of the nitrite ion.

Give the number of valence electrons for SCl4.

Using periodic trends,place the following bonds in order of decreasing ionic character. Sb-I P-I As-I

Place the following elements in order of increasing electronegativity. Ba C Sc

Define dipole moment.

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

The compound BrCl contains

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,

Liquids,solids,and Intermolecular Forces

Solids and Modern Materials

Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Aqueous Ionic Equilibrium

Free Energy and Thermodynamics

Electrochemistry

Radioactivity and Nuclear Chemistry

Organic Chemistry

Biochemistry

Chemistry of the Nonmetals

Metals and Metallurgy

Transition Metals and Coordination Compounds

Filters

Choose the best Lewis structure for PO₄³⁻.

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 CsCl (ΔH°_latt)?

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

Give the number of valence electrons for CH₂F₂.

Draw the Lewis structure for NO₂⁻ including any valid resonance structures.Describe the resonance hybrid of the nitrite ion.

Give the number of valence electrons for SCl₄.

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