Question 1

Choose the best Lewis structure for ICl5.

Accepted Answer

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

Question 2

Which element can expand its valence shell to accommodate more than eight electrons?

Accepted Answer

A) N 
B) O 
C) Br 
D) He 
A) N 
B) O 
C) Br 
D) He

Question 3

Place the following in order of decreasing XO bond length,where "X" represents the central atom in each of the following compounds or ions.
SiO32⁻ CO2 CO32⁻

Accepted Answer

A) CO2 > SiO32⁻ > CO32⁻ 
B) CO2 > CO32⁻ > SiO32⁻ 
C) CO32⁻ > CO2 > SiO32⁻ 
D) CO32⁻ > SiO32⁻ > CO2 
E) SiO32⁻ > CO32⁻ > CO2 
A) CO2 > SiO32⁻ > CO32⁻ 
B) CO2 > CO32⁻ > SiO32⁻ 
C) CO32⁻ > CO2 > SiO32⁻ 
D) CO32⁻ > SiO32⁻ > CO2 
E) SiO32⁻ > CO32⁻ > CO2

Question 4

Use the bond energies provided to estimate ΔH°rxn for the reaction below. 
XeF2 + 2 F2 → XeF6 ΔH°rxn = ?
Bond Bond Energy (kJ/mol)
Xe-F 147
F-F 159

Accepted Answer

A) -429 kJ 
B) +159 kJ 
C) -660 kJ 
D) +176 kJ 
E) -270 kJ 
A) -429 kJ 
B) +159 kJ 
C) -660 kJ 
D) +176 kJ 
E) -270 kJ

Question 5

Match the following.
-Se-I

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

Choose the best Lewis structure for ICl₅.

Which element can expand its valence shell to accommodate more than eight electrons?

Place the following in order of decreasing XO bond length,where "X" represents the central atom in each of the following compounds or ions. SiO₃²⁻ CO₂ CO₃²⁻

Use the bond energies provided to estimate ΔH°_rxn for the reaction below. XeF_{2 +}2 F₂ → XeF₆ ΔH°_rxn= ? Bond Bond Energy (kJ/mol) Xe-F 147 F-F 159

Match the following. -Se-I

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

Choose the best Lewis structure for ICl5.

Which element can expand its valence shell to accommodate more than eight electrons?

Place the following in order of decreasing XO bond length,where "X" represents the central atom in each of the following compounds or ions. SiO32⁻ CO2 CO32⁻

Use the bond energies provided to estimate ΔH°rxn for the reaction below. XeF2 + 2 F2 → XeF6 ΔH°rxn = ? Bond Bond Energy (kJ/mol) Xe-F 147 F-F 159

Match the following. -Se-I

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

Choose the best Lewis structure for ICl₅.

Place the following in order of decreasing XO bond length,where "X" represents the central atom in each of the following compounds or ions. SiO₃²⁻ CO₂ CO₃²⁻

Use the bond energies provided to estimate ΔH°_rxn for the reaction below. XeF_{2 +}2 F₂ → XeF₆ ΔH°_rxn= ? Bond Bond Energy (kJ/mol) Xe-F 147 F-F 159