Question 1

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

Accepted Answer

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

Question 2

Draw the best Lewis structure for CI3-1.What is the formal charge on the C?

Accepted Answer

A)  0 
B)  +1 
C)  -1 
D)  -3 
E)  -5 
A)  0 
B)  +1 
C)  -1 
D)  -3 
E)  -5

Question 3

Use the data given below to construct a Born-Haber cycle to determine the electron affinity of Br. DH°(kJ)
K(s)→ K(g)89
K(g)→ K⁺(g)+ e⁻ 419
Br2(l)→ 2 Br(g)193
K(s)+   Br2(g)→ KBr(s)-394
KBr(s)→ K⁺(g)+ Br⁻(g)674

Accepted Answer

A)  -885 kJ 
B)  -325 kJ 
C)  +367 kJ 
D)  -464 kJ 
E)  +246 kJ 
A)  -885 kJ 
B)  -325 kJ 
C)  +367 kJ 
D)  -464 kJ 
E)  +246 kJ

Question 4

How many electrons does an hydroxyl radical contain?

Accepted Answer

A)  7 electrons 
B)  6 electrons 
C)  8 electrons 
D)  9 electrons 
E)  5 electrons 
A)  7 electrons 
B)  6 electrons 
C)  8 electrons 
D)  9 electrons 
E)  5 electrons

Question 5

Identify the bond with the lowest bond energy.

Accepted Answer

A)  Si=O 
B)  N=N 
C)  C=C 
D)  C=N 
E)  O=O 
A)  Si=O 
B)  N=N 
C)  C=C 
D)  C=N 
E)  O=O

Question 6

Which of the following elements can form compounds with an expanded octet?

Accepted Answer

A)  C 
B)  Br 
C)  F 
D)  Be 
E)  None of the above can form compounds with an expanded octet. 
A)  C 
B)  Br 
C)  F 
D)  Be 
E)  None of the above can form compounds with an expanded octet.

Question 7

A single covalent bond contains

Accepted Answer

A)  0 pairs of neutrons. 
B)  1 pair of electrons. 
C)  2 pairs of electrons. 
D)  1 pair of protons. 
E)  4 pairs of protons. 
A)  0 pairs of neutrons. 
B)  1 pair of electrons. 
C)  2 pairs of electrons. 
D)  1 pair of protons. 
E)  4 pairs of protons.

Question 8

Draw the Lewis Dot structure for Al3+.

Accepted Answer

The Al should have n

Question 9

Choose the bond below that is least polar.

Accepted Answer

A)  P-Cl 
B)  C-Cl 
C)  C-P 
D)  C-I 
E)  C-Te 
A)  P-Cl 
B)  C-Cl 
C)  C-P 
D)  C-I 
E)  C-Te

Question 10

Identify the compound that has polar bonds,but a dipole moment of 0.

Accepted Answer

A)  CF4 
B)  O2 
C)  KF 
D)  Ar 
E)  Zn 
A)  CF4 
B)  O2 
C)  KF 
D)  Ar 
E)  Zn

Question 11

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

Accepted Answer

A)  Mg(s) + O(s) → MgS(s) 
B)  MgS(s) → Mg(s) + O(s) 
C)  Mg2⁺(aq) + O2⁻(aq) → MgO(s) 
D)  Mg2⁺(g) + O2⁻(g) → MgO(s) 
E)  MgO(s) → Mg2⁺(aq) + O2⁻(aq) 
A)  Mg(s) + O(s) → MgS(s) 
B)  MgS(s) → Mg(s) + O(s) 
C)  Mg2⁺(aq) + O2⁻(aq) → MgO(s) 
D)  Mg2⁺(g) + O2⁻(g) → MgO(s) 
E)  MgO(s) → Mg2⁺(aq) + O2⁻(aq)

Question 12

Give the complete electronic configuration for Ca2+.

Accepted Answer

A)  1s22s22p63s24p6 
B)  1s22s22p63s23p6 
C)  1s22s22p63s23p5 
D)  1s22s23p64s25p6 
E)  1s22s2p63s2p6 
A)  1s22s22p63s24p6 
B)  1s22s22p63s23p6 
C)  1s22s22p63s23p5 
D)  1s22s23p64s25p6 
E)  1s22s2p63s2p6

Question 13

How many lone pairs of electrons are on the Xe atom in XeF6 ?

Accepted Answer

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

Question 14

Choose the best Lewis structure for SF4.

Accepted Answer

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

Question 15

How many lone pairs of electrons are on the As atom in AsF3?

Accepted Answer

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

Question 16

Identify the ionic compound that is used as an antacid.

Accepted Answer

A)  silver nitrate 
B)  barium sulfate 
C)  lithium carbonate 
D)  sodium chloride 
E)  sodium bicarbonate 
A)  silver nitrate 
B)  barium sulfate 
C)  lithium carbonate 
D)  sodium chloride 
E)  sodium bicarbonate

Question 17

Use the bond energies provided to estimate ΔH°rxn for the reaction below. PCl3(g)+ Cl2(g)→ PCl5(l)ΔH°rxn = ?
Bond Bond Energy (kJ/mol)
Cl-Cl 243
P-Cl 331

Accepted Answer

A)  -243 kJ 
B)  -419 kJ 
C)  -662 kJ 
D)  -67 kJ 
E)  -905 kJ 
A)  -243 kJ 
B)  -419 kJ 
C)  -662 kJ 
D)  -67 kJ 
E)  -905 kJ

Question 18

Of the following elements,which has the lowest electronegativity?

Accepted Answer

A)  O 
B)  P 
C)  Na 
D)  Nb 
E)  W 
A)  O 
B)  P 
C)  Na 
D)  Nb 
E)  W

Question 19

Identify the number of bonding pairs and lone pairs of electrons in water.

Accepted Answer

A)  1 bonding pair and 1 lone pair 
B)  1 bonding pair and 2 lone pairs 
C)  2 bonding pairs and 2 lone pairs 
D)  2 bonding pairs and 1 lone pair 
E)  3 bonding pairs and 2 lone pairs 
A)  1 bonding pair and 1 lone pair 
B)  1 bonding pair and 2 lone pairs 
C)  2 bonding pairs and 2 lone pairs 
D)  2 bonding pairs and 1 lone pair 
E)  3 bonding pairs and 2 lone pairs

Question 20

Which of the following ionic compounds would be expected to have the highest lattice energy?

Accepted Answer

A)  Li Br 
B)  Na Br 
C)  K Br 
D)  Rb Br 
A)  Li Br 
B)  Na Br 
C)  K Br 
D)  Rb Br

Exam 9: Chemical Bonding I: Lewis Theory

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

Draw the best Lewis structure for CI3-1.What is the formal charge on the C?

Use the data given below to construct a Born-Haber cycle to determine the electron affinity of Br. DH°(kJ) K(s)→ K(g)89 K(g)→ K⁺(g)+ e⁻ 419 Br2(l)→ 2 Br(g)193 K(s)+ Br2(g)→ KBr(s)-394 KBr(s)→ K⁺(g)+ Br⁻(g)674

How many electrons does an hydroxyl radical contain?

Identify the bond with the lowest bond energy.

Which of the following elements can form compounds with an expanded octet?

A single covalent bond contains

Draw the Lewis Dot structure for Al3+.

Choose the bond below that is least polar.

Identify the compound that has polar bonds,but a dipole moment of 0.

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

Give the complete electronic configuration for Ca2+.

How many lone pairs of electrons are on the Xe atom in XeF6 ?

Choose the best Lewis structure for SF4.

How many lone pairs of electrons are on the As atom in AsF3?

Identify the ionic compound that is used as an antacid.

Use the bond energies provided to estimate ΔH°rxn for the reaction below. PCl3(g)+ Cl2(g)→ PCl5(l)ΔH°rxn = ? Bond Bond Energy (kJ/mol) Cl-Cl 243 P-Cl 331

Of the following elements,which has the lowest electronegativity?

Identify the number of bonding pairs and lone pairs of electrons in water.

Which of the following ionic compounds would be expected to have the highest lattice energy?

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

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Organic Chemistry

Biochemistry

Chemistry of the Nonmetals

Metals and Metallurgy

Transition Metals and Coordination Compounds

Filters

Draw the best Lewis structure for CI₃^-1.What is the formal charge on the C?

Use the data given below to construct a Born-Haber cycle to determine the electron affinity of Br. DH°(kJ) K(s)→ K(g)89 K(g)→ K⁺(g)+ e⁻ 419 Br₂(l)→ 2 Br(g)193 K(s)+ Br₂(g)→ KBr(s)-394 KBr(s)→ K⁺(g)+ Br⁻(g)674

Draw the Lewis Dot structure for Al³⁺.

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

Give the complete electronic configuration for Ca²⁺.

How many lone pairs of electrons are on the Xe atom in XeF₆?

Choose the best Lewis structure for SF₄.

How many lone pairs of electrons are on the As atom in AsF₃?

Use the bond energies provided to estimate ΔH°_rxn for the reaction below. PCl₃(g)+ Cl₂(g)→ PCl₅(l)ΔH°_rxn= ? Bond Bond Energy (kJ/mol) Cl-Cl 243 P-Cl 331