Question 1

Magnesium oxide, MgO, is an important industrial material. Which of the following is one of its uses?

Accepted Answer

A)  antacid 
B)  catalysts 
C)  toothpaste abrasive 
D)  construction material 
E)  furnace bricks 
A)  antacid 
B)  catalysts 
C)  toothpaste abrasive 
D)  construction material 
E)  furnace bricks

Question 2

The halogens are

Accepted Answer

A)  strong oxidizing agents. 
B)  strong reducing agents. 
C)  strong acids. 
D)  strong bases. 
E)  amphoteric. 
A)  strong oxidizing agents. 
B)  strong reducing agents. 
C)  strong acids. 
D)  strong bases. 
E)  amphoteric.

Question 3

Boron has 3 valence electrons. Which of the following processes is involved in boron's achieving a complete outer shell?

Accepted Answer

A)  formation of a B3+ cation 
B)  formation of bridge bonds 
C)  formation of F1F1F1S1F1F1F10-bonds using its d-orbitals 
D)  formation of F1F1F1S1F1F1F10-bonds using sp3-orbitals 
E)  none of the above 
A)  formation of a B3+ cation 
B)  formation of bridge bonds 
C)  formation of F1F1F1S1F1F1F10-bonds using its d-orbitals 
D)  formation of F1F1F1S1F1F1F10-bonds using sp3-orbitals 
E)  none of the above

Question 4

Select the element with the lowest first ionization energy.

Accepted Answer

A)  Se 
B)  S 
C)  Sn 
D)  Sr 
E)  H 
A)  Se 
B)  S 
C)  Sn 
D)  Sr 
E)  H

Question 5

Sulfur hexafluoride, SF6, is

Accepted Answer

A)  a reactive gas that decomposes when exposed to moisture. 
B)  a reactive gas used to fluorinate organic compounds. 
C)  an inert gas that is used as an electrical insulator. 
D)  a reactant in the process of manufacturing non-stick coatings. 
E)  used in the manufacture of sulfuric acid. 
A)  a reactive gas that decomposes when exposed to moisture. 
B)  a reactive gas used to fluorinate organic compounds. 
C)  an inert gas that is used as an electrical insulator. 
D)  a reactant in the process of manufacturing non-stick coatings. 
E)  used in the manufacture of sulfuric acid.

Question 6

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

Accepted Answer

A) True 
 B)False

Question 7

Potassium is a strong reducing agent.

Accepted Answer

A) True 
 B)False

Question 8

The atomic radius of sodium is 186 pm and of chlorine is 100 pm. The ionic radius for Na+ is 102 pm and for Cl- is 181 pm. In going from Na to Cl in Period 3, why does the atomic radius decrease while the ionic radius increases?

Accepted Answer

A)  The inner electrons in the sodium cation shield its valence electrons more effectively than the inner electrons in the chloride anion do. 
B)  The inner electrons shield the valence electrons more effectively in the chlorine atom than in the chloride anion. 
C)  The outermost electrons in chloride experience a smaller effective nuclear charge than those in the sodium cation do. 
D)  The outermost electrons in chloride experience a larger effective nuclear charge than those in the sodium cation do. 
E)  Monatomic ions are bigger than the atoms from which they are formed. 
A)  The inner electrons in the sodium cation shield its valence electrons more effectively than the inner electrons in the chloride anion do. 
B)  The inner electrons shield the valence electrons more effectively in the chlorine atom than in the chloride anion. 
C)  The outermost electrons in chloride experience a smaller effective nuclear charge than those in the sodium cation do. 
D)  The outermost electrons in chloride experience a larger effective nuclear charge than those in the sodium cation do. 
E)  Monatomic ions are bigger than the atoms from which they are formed.

Question 9

Which element forms compounds which are involved in smog and acid rain?

Accepted Answer

A)  carbon 
B)  fluorine 
C)  chlorine 
D)  boron 
E)  nitrogen 
A)  carbon 
B)  fluorine 
C)  chlorine 
D)  boron 
E)  nitrogen

Question 10

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 11

Salts of group 1A metals are generally more soluble than those of group 2A metals.

Accepted Answer

A) True 
 B)False

Question 12

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 13

Predict the products for the reaction of the following set of reactants. BaO(s) + CO2(g) F1F1F1S1F1F1F10

Accepted Answer

A)  BaCO3(s) 
B)  Ba(s) + CO(g) + O2(g) 
C)  BaO2(s) + CO(g) 
D)  Ba2CO3(s) 
E)  BaC2(s) + O2(g) 
A)  BaCO3(s) 
B)  Ba(s) + CO(g) + O2(g) 
C)  BaO2(s) + CO(g) 
D)  Ba2CO3(s) 
E)  BaC2(s) + O2(g)

Question 14

Predict the products for the following set of reactants. Li(s) + H2O(l) F1F1F1S1F1F1F10

Accepted Answer

A)  Li+(aq) + H2(g) + O2(g) 
B)  Li+(aq) + H2(g) + OH-(aq) 
C)  LiH(s) + O2(g) 
D)  Li+(aq) + H2O2(aq) 
E)  LiOH(aq) + H2O2(aq) 
A)  Li+(aq) + H2(g) + O2(g) 
B)  Li+(aq) + H2(g) + OH-(aq) 
C)  LiH(s) + O2(g) 
D)  Li+(aq) + H2O2(aq) 
E)  LiOH(aq) + H2O2(aq)

Question 15

The strongest elemental oxidizing agents are found in the _________ _________ region of the periodic table while the strongest reducing agents are found in the ________ ________ region of the periodic table.

Accepted Answer

A)  upper left, lower right 
B)  upper right, lower left 
C)  lower left, upper right 
D)  lower right, upper left 
E)  transition element, main group 
A)  upper left, lower right 
B)  upper right, lower left 
C)  lower left, upper right 
D)  lower right, upper left 
E)  transition element, main group

Question 16

Which one of the following trends occurs as one moves down the group 1A (1) elements from Li to Cs?

Accepted Answer

A)  metallic character decreases 
B)  electronegativity increases 
C)  melting point increases 
D)  first ionization energy increases 
E)  chemical reactivity increases 
A)  metallic character decreases 
B)  electronegativity increases 
C)  melting point increases 
D)  first ionization energy increases 
E)  chemical reactivity increases

Question 17

Name the three allotropes of carbon and briefly describe their properties and structures.

Accepted Answer

Graphite is the stablest allotrope under

Question 18

Predict the products for the reaction of the following set of reactants. (CH3)3Ga(g) + AsH3(g) F1F1F1S1F1F1F10

Accepted Answer

A)  (CH3)3As(g) + GaH3(g) 
B)  CH4(g) + GaAs(s) 
C)  CH3CH3(g) + GaAs(s) 
D)  CH4(g) + H2GaAs(s) 
E)  CH3H(g) + GaAs(s) 
A)  (CH3)3As(g) + GaH3(g) 
B)  CH4(g) + GaAs(s) 
C)  CH3CH3(g) + GaAs(s) 
D)  CH4(g) + H2GaAs(s) 
E)  CH3H(g) + GaAs(s)

Exam 14: Periodic Patterns in the Main Group Elements: Bonding, Structure, and Reactivity

Magnesium oxide, MgO, is an important industrial material. Which of the following is one of its uses?

The halogens are

Boron has 3 valence electrons. Which of the following processes is involved in boron's achieving a complete outer shell?

Select the element with the lowest first ionization energy.

Sulfur hexafluoride, SF6, is

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

Potassium is a strong reducing agent.

The atomic radius of sodium is 186 pm and of chlorine is 100 pm. The ionic radius for Na+ is 102 pm and for Cl- is 181 pm. In going from Na to Cl in Period 3, why does the atomic radius decrease while the ionic radius increases?

Which element forms compounds which are involved in smog and acid rain?

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

Salts of group 1A metals are generally more soluble than those of group 2A metals.

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

Predict the products for the reaction of the following set of reactants. BaO(s) + CO2(g) 

Predict the products for the following set of reactants. Li(s) + H2O(l) 

The strongest elemental oxidizing agents are found in the _________ _________ region of the periodic table while the strongest reducing agents are found in the ________ ________ region of the periodic table.

Which one of the following trends occurs as one moves down the group 1A (1) elements from Li to Cs?

Name the three allotropes of carbon and briefly describe their properties and structures.

Predict the products for the reaction of the following set of reactants. (CH3)3Ga(g) + AsH3(g) 

Keys to the Study of Chemistry

The Components of Matter

Stoichiometry of Formulas and Equations

The 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 the Direction of Chemical Reactions

Electrochemistry: Chemical Change and Electrical Work

The Elements in Nature and Industry

The Transition Elements and Their Coordination Compounds

Nuclear Reactions and Their Applications

Filters

Sulfur hexafluoride, SF₆, is

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

The atomic radius of sodium is 186 pm and of chlorine is 100 pm. The ionic radius for Na⁺ is 102 pm and for Cl^- is 181 pm. In going from Na to Cl in Period 3, why does the atomic radius decrease while the ionic radius increases?

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

Predict the products for the reaction of the following set of reactants. BaO(s) + CO₂(g) 

Predict the products for the following set of reactants. Li(s) + H₂O(l) 

The strongest elemental oxidizing agents are found in the _____ _ region of the periodic table while the strongest reducing agents are found in the ____ region of the periodic table.

Predict the products for the reaction of the following set of reactants. (CH₃)₃Ga(g) + AsH₃(g) 