Question 1

Which of the following pure substances will not participate in hydrogen bonding?

Accepted Answer

A)  CH3NH2 
B)  CH3CH2OCH2CH3 
C)  CH3CH2OH 
D)  HF 
E)  H2O2 
A)  CH3NH2 
B)  CH3CH2OCH2CH3 
C)  CH3CH2OH 
D)  HF 
E)  H2O2

Question 2

In the gas phase, AlCl3 exists as molecules of Al2Cl6.

Accepted Answer

A) True 
 B)False

Question 3

Which of the following ions and atoms has the greatest radius?

Accepted Answer

A)  Se2- 
B)  Br- 
C)  Rb+ 
D)  Sr2+ 
E)  Kr 
A)  Se2- 
B)  Br- 
C)  Rb+ 
D)  Sr2+ 
E)  Kr

Question 4

Dinitrogen monoxide, N2O, is

Accepted Answer

A)  a brown poisonous gas that is one of the chemicals involved in the production of photochemical smog. 
B)  a colorless gas used in the production of nitric acid. 
C)  a colorless gas used as a propellant in canned whipped cream. 
D)  a colorless gas that disproportionates into nitrogen and oxygen. 
E)  None of these choices are correct. 
A)  a brown poisonous gas that is one of the chemicals involved in the production of photochemical smog. 
B)  a colorless gas used in the production of nitric acid. 
C)  a colorless gas used as a propellant in canned whipped cream. 
D)  a colorless gas that disproportionates into nitrogen and oxygen. 
E)  None of these choices are correct.

Question 5

Which of the following oxides will be the most acidic?

Accepted Answer

A)  Al2O3 
B)  Ga2O3 
C)  In2O3 
D)  Tl2O3 
E)  None of these oxides is acidic. 
A)  Al2O3 
B)  Ga2O3 
C)  In2O3 
D)  Tl2O3 
E)  None of these oxides is acidic.

Question 6

Predict the products for the following set of reactants. Ca3As2(s) + H2O(l) →

Accepted Answer

A)  As3+(aq) + Ca(OH)2(aq) 
B)  As(OH)3(s) + Ca2+(aq) + H2(g) 
C)  As(OH)3(s) + Ca(OH)2(aq) 
D)  AsH3(g) + Ca(OH)2(aq) 
E)  CaH2(aq) + As2O3(aq) 
A)  As3+(aq) + Ca(OH)2(aq) 
B)  As(OH)3(s) + Ca2+(aq) + H2(g) 
C)  As(OH)3(s) + Ca(OH)2(aq) 
D)  AsH3(g) + Ca(OH)2(aq) 
E)  CaH2(aq) + As2O3(aq)

Question 7

Sulfuric acid is produced when sulfur dioxide dissolves in water.

Accepted Answer

A) True 
 B)False

Question 8

Silicon halides have stronger bonds than corresponding carbon halides. Which of the following is a possible explanation of this phenomenon?

Accepted Answer

A)  The larger silicon atoms permit better overlap of its atomic orbitals with those of the halogens than the smaller carbons atoms do. 
B)  The large electronegativity difference between silicon and the halogens makes their bonds stronger than those of carbon. 
C)  Silicon has the ability to form a partial double bond with a halogen through the overlap of its d-orbital with a p-orbital of the halogen. 
D)  Silicon has a larger effective nuclear charge than carbon which allows it to bond more strongly to the more negative halogens than carbon. 
E)  Carbon-halogen bonds are unusually weak. 
A)  The larger silicon atoms permit better overlap of its atomic orbitals with those of the halogens than the smaller carbons atoms do. 
B)  The large electronegativity difference between silicon and the halogens makes their bonds stronger than those of carbon. 
C)  Silicon has the ability to form a partial double bond with a halogen through the overlap of its d-orbital with a p-orbital of the halogen. 
D)  Silicon has a larger effective nuclear charge than carbon which allows it to bond more strongly to the more negative halogens than carbon. 
E)  Carbon-halogen bonds are unusually weak.

Question 9

Which of the following elements has the lowest electronegativity?

Accepted Answer

A)  Al 
B)  S 
C)  Mg 
D)  In 
E)  Ba 
A)  Al 
B)  S 
C)  Mg 
D)  In 
E)  Ba

Question 10

In which of the following ways is lithium different from the other alkali metals?

Accepted Answer

A)  Its salts are much more soluble in water than those of the other alkali metals. 
B)  It has an unusually high density. 
C)  It forms molecular compounds with the hydrocarbon groups of organic halides. 
D)  Its ionization energy is lower than expected. 
E)  It does not react with water at room temperature. 
A)  Its salts are much more soluble in water than those of the other alkali metals. 
B)  It has an unusually high density. 
C)  It forms molecular compounds with the hydrocarbon groups of organic halides. 
D)  Its ionization energy is lower than expected. 
E)  It does not react with water at room temperature.

Question 11

Unlike the remainder of the Group 1A(1) elements, lithium forms many salts that have some covalent bond character. What is a reason for this behavior?

Accepted Answer

A)  The high first ionization energy of lithium makes sharing the electron easier than transferring it. 
B)  The high charge density on the lithium cation deforms nearby polarizable electron clouds. 
C)  The atomic radius of lithium enables it to share its valence electron effectively. 
D)  Since lithium has only 1 electron in its 2s orbital, it can accept an electron from another element. 
E)  Lithium's electronegativity is more like that of a non-metal than a metal. 
A)  The high first ionization energy of lithium makes sharing the electron easier than transferring it. 
B)  The high charge density on the lithium cation deforms nearby polarizable electron clouds. 
C)  The atomic radius of lithium enables it to share its valence electron effectively. 
D)  Since lithium has only 1 electron in its 2s orbital, it can accept an electron from another element. 
E)  Lithium's electronegativity is more like that of a non-metal than a metal.

Question 12

Phosphoric acid (H3PO4) is a strong acid.

Accepted Answer

A) True 
 B)False

Question 13

Xenon forms several compounds with oxygen and fluorine. It is the most reactive nonradioactive noble gas because

Accepted Answer

A)  its large radius allows oxygen and fluorine to bond without being crowded. 
B)  it has the highest electronegativity of these noble gases. 
C)  it has the highest electron affinity of these noble gases. 
D)  its effective nuclear charge is lower than the other noble gases. 
E)  it has the lowest ionization energy of these noble gases. 
A)  its large radius allows oxygen and fluorine to bond without being crowded. 
B)  it has the highest electronegativity of these noble gases. 
C)  it has the highest electron affinity of these noble gases. 
D)  its effective nuclear charge is lower than the other noble gases. 
E)  it has the lowest ionization energy of these noble gases.

Question 14

The largest electronegativities are found in the _____________ ____________ region of the periodic table.

Accepted Answer

A)  upper left 
B)  upper right 
C)  lower left 
D)  lower right 
E)  transition element (d-block) 
A)  upper left 
B)  upper right 
C)  lower left 
D)  lower right 
E)  transition element (d-block)

Question 15

The most basic oxides contain elements from the ________________ ____________ region of the periodic table.

Accepted Answer

A)  upper right 
B)  upper left 
C)  lower right 
D)  lower left 
E)  transition element (d-block) 
A)  upper right 
B)  upper left 
C)  lower right 
D)  lower left 
E)  transition element (d-block)

Question 16

The halogens act as oxidizing agents in most of their reactions.

Accepted Answer

A) True 
 B)False

Question 17

Predict the products for the following set of reactants. Cl2(g) + I-(aq) →

Accepted Answer

A)  ICl 
B)  ICl2 
C)  ICl3 
D)  I2 + Cl- 
E)  I + Cl2- 
A)  ICl 
B)  ICl2 
C)  ICl3 
D)  I2 + Cl- 
E)  I + Cl2-

Question 18

The Haber process is the first step in the manufacture of sulfuric acid.

Accepted Answer

A) True 
 B)False

Question 19

Potassium is a strong reducing agent.

Accepted Answer

A) True 
 B)False

Question 20

Consider all of the known elements. Which element has the greatest ability to covalently bond to itself and to form multiple bonds?

Accepted Answer

A)  Al 
B)  B 
C)  C 
D)  Si 
E)  H 
A)  Al 
B)  B 
C)  C 
D)  Si 
E)  H

Exam 14: Periodic Patterns in the Main-Group Elements

Which of the following pure substances will not participate in hydrogen bonding?

In the gas phase, AlCl3 exists as molecules of Al2Cl6.

Which of the following ions and atoms has the greatest radius?

Dinitrogen monoxide, N2O, is

Which of the following oxides will be the most acidic?

Predict the products for the following set of reactants. Ca3As2(s) + H2O(l) →

Sulfuric acid is produced when sulfur dioxide dissolves in water.

Silicon halides have stronger bonds than corresponding carbon halides. Which of the following is a possible explanation of this phenomenon?

Which of the following elements has the lowest electronegativity?

In which of the following ways is lithium different from the other alkali metals?

Unlike the remainder of the Group 1A(1) elements, lithium forms many salts that have some covalent bond character. What is a reason for this behavior?

Phosphoric acid (H3PO4) is a strong acid.

Xenon forms several compounds with oxygen and fluorine. It is the most reactive nonradioactive noble gas because

The largest electronegativities are found in the _____________ ____________ region of the periodic table.

The most basic oxides contain elements from the ________________ ____________ region of the periodic table.

The halogens act as oxidizing agents in most of their reactions.

Predict the products for the following set of reactants. Cl2(g) + I-(aq) →

The Haber process is the first step in the manufacture of sulfuric acid.

Potassium is a strong reducing agent.

Consider all of the known elements. Which element has the greatest ability to covalently bond to itself and to form multiple bonds?

Keys to Studying Chemistry Definitions, Units, and Problem Solving

The Components of Matter

Stoichiometry of Formulas and Equations

Three Major Classes of Chemical Reactions

Gases and the Kinetic-Molecular Theory

Thermochemistry Energy Flow and Chemical Change

Quantum Theory and Atomic Structure

Electron Configuration and Chemical Periodicity

Models of Chemical Bonding

The Shapes of Molecules

Theories of Covalent Bonding

Intermolecular Forces Liquids, Solids, and Phase Changes

The Properties of Mixtures Solutions and Colloids

Organic Compounds and the Atomic Properties of Carbon

Kinetics Rates and Mechanisms of Chemical Reactions

Equilibrium the Extent of Chemical Reactions

Acid-Base Equilibria

Ionic Equilibria in Aqueous Systems

Thermodynamics Entropy, Free Energy, and Reaction Direction

Electrochemistry Chemical Change and Electrical Work

The Elements in Nature and Industry

Transition Elements and Their Coordination Compounds

Nuclear Reactions and Their Applications

Filters

In the gas phase, AlCl₃ exists as molecules of Al₂Cl₆.

Dinitrogen monoxide, N₂O, is

Predict the products for the following set of reactants. Ca₃As₂(s) + H₂O(l) →

Phosphoric acid (H₃PO₄) is a strong acid.

The largest electronegativities are found in the _ region of the periodic table.

The most basic oxides contain elements from the ____ region of the periodic table.

Predict the products for the following set of reactants. Cl₂(g) + I-(aq) →