Question 1

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 2

Which of the following is an accurate comparison of the properties of nitrogen and oxygen?

Accepted Answer

A)  Both oxygen and nitrogen form anions easily. 
B)  Oxygen is a strong oxidizing agent while nitrogen is a strong reducing agent. 
C)  Nitrogen uses more oxidation states in its compounds than oxygen does. 
D)  Nitrogen is more reactive than oxygen. 
E)  Nitrogen does not form naturally-occurring compounds, but oxygen does. 
A)  Both oxygen and nitrogen form anions easily. 
B)  Oxygen is a strong oxidizing agent while nitrogen is a strong reducing agent. 
C)  Nitrogen uses more oxidation states in its compounds than oxygen does. 
D)  Nitrogen is more reactive than oxygen. 
E)  Nitrogen does not form naturally-occurring compounds, but oxygen does.

Question 3

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

Accepted Answer

A) True 
 B)False

Question 4

Which of the following has the most allotropes?

Accepted Answer

A)  carbon 
B)  sulfur 
C)  oxygen 
D)  selenium 
E)  nitrogen 
A)  carbon 
B)  sulfur 
C)  oxygen 
D)  selenium 
E)  nitrogen

Question 5

Which of the following substances is produced when lithium metal reacts with oxygen gas?

Accepted Answer

A)  hydrogen gas 
B)  lithium peroxide 
C)  an acidic oxide 
D)  a basic oxide 
E)  lithium hydroxide 
A)  hydrogen gas 
B)  lithium peroxide 
C)  an acidic oxide 
D)  a basic oxide 
E)  lithium hydroxide

Question 6

Which, if any, of the following generalized formulas does not exist for interhalogen compounds? (X and Y represent different halogens.)

Accepted Answer

A)  XY 
B)  XY2 
C)  XY3 
D)  XY5 
E)  All of these choices are correct. 
A)  XY 
B)  XY2 
C)  XY3 
D)  XY5 
E)  All of these choices are correct.

Question 7

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 8

Predict the molecular shape of XeF3-.

Accepted Answer

A)  linear 
B)  trigonal planar 
C)  trigonal pyramid 
D)  T-shaped 
E)  square 
A)  linear 
B)  trigonal planar 
C)  trigonal pyramid 
D)  T-shaped 
E)  square

Question 9

Sulfur hexafluoride is a pollutant responsible for acid rain.

Accepted Answer

A) True 
 B)False

Question 10

What is the highest oxidation state of chlorine in any of its compounds?

Accepted Answer

A)  -1 
B)  0 
C)  +1 
D)  +3 
E)  +7 
A)  -1 
B)  0 
C)  +1 
D)  +3 
E)  +7

Question 11

Predict the products for the following set of reactants. Cs(s) + Br2(l) →

Accepted Answer

A)  CsBr(s) 
B)  CsBr2(s) 
C)  CsBr(l) 
D)  CsBr2(l) 
E)  Cs2Br(s) 
A)  CsBr(s) 
B)  CsBr2(s) 
C)  CsBr(l) 
D)  CsBr2(l) 
E)  Cs2Br(s)

Question 12

Which of the following statements about the effective nuclear charge, Zeff, is correct?

Accepted Answer

A)  Zeff increases with the size of the atom. 
B)  Zeff decreases across a period and increases down a group. 
C)  Zeff increases across a period and is relatively constant down a group. 
D)  Zeff increases as the value of the principal quantum number increases. 
E)  Zeff is greater for hydrogen than for any other element. 
A)  Zeff increases with the size of the atom. 
B)  Zeff decreases across a period and increases down a group. 
C)  Zeff increases across a period and is relatively constant down a group. 
D)  Zeff increases as the value of the principal quantum number increases. 
E)  Zeff is greater for hydrogen than for any other element.

Question 13

Predict the products for the following set of reactants. PCl3(l) + H2O(l) →

Accepted Answer

A)  H3PO3(aq) + HCl(aq) 
B)  H3PO4(aq) + Cl2(g) 
C)  PH3(g) + HCl(aq) + O2(g) 
D)  P2O5(s) + HCl(aq) 
E)  PCl5(l) + PH3(g) + O2(g) 
A)  H3PO3(aq) + HCl(aq) 
B)  H3PO4(aq) + Cl2(g) 
C)  PH3(g) + HCl(aq) + O2(g) 
D)  P2O5(s) + HCl(aq) 
E)  PCl5(l) + PH3(g) + O2(g)

Question 14

Which of the following atoms has the smallest volume?

Accepted Answer

A)  Ba 
B)  Cs 
C)  Sr 
D)  Rb 
E)  I 
A)  Ba 
B)  Cs 
C)  Sr 
D)  Rb 
E)  I

Question 15

Predict the products for the following set of reactants. H2O(l) + ClF5(l) →

Accepted Answer

A)  HClO2(aq) + HF(aq) 
B)  HClO3(aq) + HF(aq) 
C)  HClO(aq) + HF(aq) 
D)  HCl(aq) + HF(aq) 
E)  HClO(aq) + HFO(aq) 
A)  HClO2(aq) + HF(aq) 
B)  HClO3(aq) + HF(aq) 
C)  HClO(aq) + HF(aq) 
D)  HCl(aq) + HF(aq) 
E)  HClO(aq) + HFO(aq)

Question 16

The nitrate anion is

Accepted Answer

A)  a strong acid. 
B)  a strong base. 
C)  amphoteric. 
D)  a strong reducing agent. 
E)  a strong oxidizing agent. 
A)  a strong acid. 
B)  a strong base. 
C)  amphoteric. 
D)  a strong reducing agent. 
E)  a strong oxidizing agent.

Question 17

Which of the following is the strongest acid?

Accepted Answer

A)  HClO3 
B)  HBrO3 
C)  HIO3 
D)  HIO2 
E)  HClO 
A)  HClO3 
B)  HBrO3 
C)  HIO3 
D)  HIO2 
E)  HClO

Question 18

Which of the following pairs of elements will form the longest single bond?

Accepted Answer

A)  C, F 
B)  C, N 
C)  C, S 
D)  C, O 
E)  C, H 
A)  C, F 
B)  C, N 
C)  C, S 
D)  C, O 
E)  C, H

Question 19

Potassium nitrate is a strong reducing agent.

Accepted Answer

A) True 
 B)False

Question 20

Which element forms compounds that 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

Exam 14: Periodic Patterns in the Main-Group Elements

Select the element with the lowest first ionization energy.

Which of the following is an accurate comparison of the properties of nitrogen and oxygen?

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

Which of the following has the most allotropes?

Which of the following substances is produced when lithium metal reacts with oxygen gas?

Which, if any, of the following generalized formulas does not exist for interhalogen compounds? (X and Y represent different halogens.)

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

Predict the molecular shape of XeF3-.

Sulfur hexafluoride is a pollutant responsible for acid rain.

What is the highest oxidation state of chlorine in any of its compounds?

Predict the products for the following set of reactants. Cs(s) + Br2(l) →

Which of the following statements about the effective nuclear charge, Zeff, is correct?

Predict the products for the following set of reactants. PCl3(l) + H2O(l) →

Which of the following atoms has the smallest volume?

Predict the products for the following set of reactants. H2O(l) + ClF5(l) →

The nitrate anion is

Which of the following is the strongest acid?

Which of the following pairs of elements will form the longest single bond?

Potassium nitrate is a strong reducing agent.

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

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

Predict the molecular shape of XeF₃^-.

Which of the following statements about the effective nuclear charge, Z_eff, is correct?

Predict the products for the following set of reactants. PCl₃(l) + H₂O(l) →

Predict the products for the following set of reactants. H₂O(l) + ClF₅(l) →