Question 1

Write a balanced equation for the following reactions.
-Lithium metal with Br2(l)

Accepted Answer

2Li(s) + Br₂(l) → 2LiBr(s)

Question 2

Compounds containing bismuth in the +5 oxidation state tend to be ________, and compounds containing bismuth in the +3 oxidation state tend to be ________.

Accepted Answer

A)  ionic, ionic 
B)  ionic, molecular 
C)  molecular, molecular 
D)  molecular, ionic 
E)  none of these 
A)  ionic, ionic 
B)  ionic, molecular 
C)  molecular, molecular 
D)  molecular, ionic 
E)  none of these D

Question 3

Write a balanced equation for the following reactions.
-Potassium superoxide with CO2(g)

Accepted Answer

4KO₂(s) + 2CO₂(g) → 2K₂CO₃(s) + 3O₂(g)

Question 4

Choose the correct molecular structure for P4.

Accepted Answer

A)  octahedral 
B)  trigonal bipyramidal 
C)  trigonal planar 
D)  tetrahedral 
E)  none of these 
A)  octahedral 
B)  trigonal bipyramidal 
C)  trigonal planar 
D)  tetrahedral 
E)  none of these

Question 5

Write a balanced equation for the following reactions.
-Lead metal with H+(aq)

Accepted Answer

Pb(s) + 2H

Question 6

Write a balanced equation for each of the following.
-The reaction of calcium fluoride with sulfuric acid

Accepted Answer

CaF₂(s) + H

Question 7

Write a balanced equation for each of the following.
-The reaction of P4O10(s) with water

Accepted Answer

P₄O₁₀(s) + 6H

Question 8

Which of the following elements has the lowest melting point?

Accepted Answer

A)  B 
B)  Ga 
C)  Tl 
D)  Al 
E)  All have the same melting point. 
A)  B 
B)  Ga 
C)  Tl 
D)  Al 
E)  All have the same melting point.

Question 9

Which of the following statements is/are true of hydrogen under ordinary conditions of temperature and pressure?
1) Hydrogen is a colorless and odorless gas.2. Hydrogen has high molar mass and is polar in nature.3. Hydrogen has a very low boiling point (−253°C) and melting point (−260°C).​

Accepted Answer

A)  ​1 only 
B)  ​2 only 
C)  ​3 only 
D)  ​1 and 2 
E)  ​1 and 3 
A)  ​1 only 
B)  ​2 only 
C)  ​3 only 
D)  ​1 and 2 
E)  ​1 and 3

Question 10

Which of the following are allotropes of tin?

Accepted Answer

A)  White tin 
B)  Rim tin 
C)  Blue tin 
D)  Brittle tin 
E)  all of the above
F) A and B only
G) A and D only 
A)  White tin 
B)  Rim tin 
C)  Blue tin 
D)  Brittle tin 
E)  all of the above
F) A and B only
G) A and D only

Question 11

Choose the correct molecular structure for PCl3.

Accepted Answer

A)  trigonal bipyramidal 
B)  octahedral 
C)  tetrahedral 
D)  trigonal planar 
E)  none of these 
A)  trigonal bipyramidal 
B)  octahedral 
C)  tetrahedral 
D)  trigonal planar 
E)  none of these

Question 12

Write a balanced equation for each of the following.
-The oxidation of sulfur dioxide by oxygen gas

Accepted Answer

2SO₂(g) + O

Question 13

For the process X-(g) → X-(aq), select the ion with the most negative value of ΔS.

Accepted Answer

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

Question 14

Which of the following oxides is amphoteric?

Accepted Answer

A)  BeO 
B)  MgO 
C)  BaO 
D)  SrO 
E)  CaO 
A)  BeO 
B)  MgO 
C)  BaO 
D)  SrO 
E)  CaO

Question 15

In which group are the elements listed in correct order of increasing first ionization energy?

Accepted Answer

A) Al > Si > P B) Na > P > Cl C) Cs > Na > K D) K > Ca > Ge E) Cs < Rb < Na A) Al > Si > P B) Na > P > Cl C) Cs > Na > K D) K > Ca > Ge E) Cs < Rb < Na

Question 16

Identify the true statement(s) of oxygen. 
1. Oxygen molecules are paramagnetic in nature. 
2. Ozone can be prepared by passing an electrical discharge through water. 
3. Oxidizing power of ozone is greater than that of oxygen.

Accepted Answer

A)  ​3 only 
B)  ​1 only 
C)  ​1 and 2 
D)  ​1 and 3 
E)  ​2 and 3 
A)  ​3 only 
B)  ​1 only 
C)  ​1 and 2 
D)  ​1 and 3 
E)  ​2 and 3

Question 17

Which of the following is best explained by the fact that the SO molecule is very unstable, whereas O2 is stable.

Accepted Answer

A)  There exists much stronger π bonding between oxygen atoms than between a sulfur atom and an oxygen atom. 
B)  The S-O bond is inherently unstable. 
C)  The difference in electronegativity between the sulfur atom and the oxygen atom makes it unlikely for the S-O bond to form. 
D)  Sulfur lacks the ability to form double bonds. 
E)  none of these 
A)  There exists much stronger π bonding between oxygen atoms than between a sulfur atom and an oxygen atom. 
B)  The S-O bond is inherently unstable. 
C)  The difference in electronegativity between the sulfur atom and the oxygen atom makes it unlikely for the S-O bond to form. 
D)  Sulfur lacks the ability to form double bonds. 
E)  none of these

Question 18

Which of the following elements has the widest liquid range?

Accepted Answer

A)  B 
B)  Tl 
C)  Ga 
D)  Al 
E)  All are the same. 
A)  B 
B)  Tl 
C)  Ga 
D)  Al 
E)  All are the same.

Question 19

Identify the general valence electron configuration of the Group 5A elements.

Accepted Answer

A)  ​ns2np3 
B)  ​ns2nd3 
C)  ​ns2np4 
D)  ​ns2nd2 
E)  ​ns2np6 
A)  ​ns2np3 
B)  ​ns2nd3 
C)  ​ns2np4 
D)  ​ns2nd2 
E)  ​ns2np6

Question 20

Pi bonding tends to be important in all elements of Group 5.

Accepted Answer

A) True 
 B)False

Write a balanced equation for the following reactions. -Lithium metal with Br₂(l)

Compounds containing bismuth in the +5 oxidation state tend to be , and compounds containing bismuth in the +3 oxidation state tend to be .

Write a balanced equation for the following reactions. -Potassium superoxide with CO₂(g)

Choose the correct molecular structure for P₄.

Write a balanced equation for the following reactions. -Lead metal with H⁺(aq)

Write a balanced equation for each of the following. -The reaction of calcium fluoride with sulfuric acid

Write a balanced equation for each of the following. -The reaction of P₄O₁₀(s) with water

Which of the following elements has the lowest melting point?

Which of the following statements is/are true of hydrogen under ordinary conditions of temperature and pressure? 1) Hydrogen is a colorless and odorless gas.2. Hydrogen has high molar mass and is polar in nature.3. Hydrogen has a very low boiling point (−253°C) and melting point (−260°C).

Which of the following are allotropes of tin?

Choose the correct molecular structure for PCl₃.

Write a balanced equation for each of the following. -The oxidation of sulfur dioxide by oxygen gas

For the process X^-(g) → X^-(aq), select the ion with the most negative value of ΔS.

Which of the following oxides is amphoteric?

In which group are the elements listed in correct order of increasing first ionization energy?

Identify the true statement(s) of oxygen. 1. Oxygen molecules are paramagnetic in nature. 2. Ozone can be prepared by passing an electrical discharge through water. 3. Oxidizing power of ozone is greater than that of oxygen.

Which of the following is best explained by the fact that the SO molecule is very unstable, whereas O₂ is stable.

Which of the following elements has the widest liquid range?

Identify the general valence electron configuration of the Group 5A elements.

Pi bonding tends to be important in all elements of Group 5.

Atoms, Molecules, and Ions

Stoichiometry

Types of Chemical Reactions and Solution Stoichiometry

Gases

Chemical Equilibrium

Acids and Bases

Applications of Aqueous Equilibria

Energy, Enthalpy, and Thermochemistry

Spontaneity, Entropy, and Free Energy

Electrochemistry

Quantum Mechanics and Atomic Theory

Bonding: General Concepts

Covalent Bonding: Orbitals

Chemical Kinetics

Liquids and Solids

Properties of Solutions

Transition Metals and Coordination Chemistry

The Nucleus: a Chemists View

Organic and Biochemical Molecules

Filters

Exam 18: The Representative Elements

Write a balanced equation for the following reactions. -Lithium metal with Br2(l)

Compounds containing bismuth in the +5 oxidation state tend to be ________, and compounds containing bismuth in the +3 oxidation state tend to be ________.

Write a balanced equation for the following reactions. -Potassium superoxide with CO2(g)

Choose the correct molecular structure for P4.

Write a balanced equation for the following reactions. -Lead metal with H+(aq)

Write a balanced equation for each of the following. -The reaction of calcium fluoride with sulfuric acid

Write a balanced equation for each of the following. -The reaction of P4O10(s) with water

Which of the following elements has the lowest melting point?

Which of the following statements is/are true of hydrogen under ordinary conditions of temperature and pressure? 1) Hydrogen is a colorless and odorless gas.2. Hydrogen has high molar mass and is polar in nature.3. Hydrogen has a very low boiling point (−253°C) and melting point (−260°C).​

Which of the following are allotropes of tin?

Choose the correct molecular structure for PCl3.

Write a balanced equation for each of the following. -The oxidation of sulfur dioxide by oxygen gas

For the process X-(g) → X-(aq), select the ion with the most negative value of ΔS.

Which of the following oxides is amphoteric?

In which group are the elements listed in correct order of increasing first ionization energy?

Identify the true statement(s) of oxygen. 1. Oxygen molecules are paramagnetic in nature. 2. Ozone can be prepared by passing an electrical discharge through water. 3. Oxidizing power of ozone is greater than that of oxygen.

Which of the following is best explained by the fact that the SO molecule is very unstable, whereas O2 is stable.

Which of the following elements has the widest liquid range?

Identify the general valence electron configuration of the Group 5A elements.

Pi bonding tends to be important in all elements of Group 5.

Atoms, Molecules, and Ions

Stoichiometry

Types of Chemical Reactions and Solution Stoichiometry

Gases

Chemical Equilibrium

Acids and Bases

Applications of Aqueous Equilibria

Energy, Enthalpy, and Thermochemistry

Spontaneity, Entropy, and Free Energy

Electrochemistry

Quantum Mechanics and Atomic Theory

Bonding: General Concepts

Covalent Bonding: Orbitals

Chemical Kinetics

Liquids and Solids

Properties of Solutions

Transition Metals and Coordination Chemistry

The Nucleus: a Chemists View

Organic and Biochemical Molecules

Filters

Write a balanced equation for the following reactions. -Lithium metal with Br₂(l)

Compounds containing bismuth in the +5 oxidation state tend to be , and compounds containing bismuth in the +3 oxidation state tend to be .

Write a balanced equation for the following reactions. -Potassium superoxide with CO₂(g)

Choose the correct molecular structure for P₄.

Write a balanced equation for the following reactions. -Lead metal with H⁺(aq)

Write a balanced equation for each of the following. -The reaction of P₄O₁₀(s) with water

Which of the following statements is/are true of hydrogen under ordinary conditions of temperature and pressure? 1) Hydrogen is a colorless and odorless gas.2. Hydrogen has high molar mass and is polar in nature.3. Hydrogen has a very low boiling point (−253°C) and melting point (−260°C).

Choose the correct molecular structure for PCl₃.

For the process X^-(g) → X^-(aq), select the ion with the most negative value of ΔS.

Which of the following is best explained by the fact that the SO molecule is very unstable, whereas O₂ is stable.