Question 1

Which of the following is an amphoteric oxide?

Accepted Answer

A)  Al2O3 
B)  Li2O 
C)  PO3 
D)  Sc2O3 
E)  SrO 
A)  Al2O3 
B)  Li2O 
C)  PO3 
D)  Sc2O3 
E)  SrO

Question 2

Which 1+ ion is isoelectronic with S2-?

Accepted Answer

Question 3

Arrange the following elements in order of increasing metallic character: Al, Pt, Cd.

Accepted Answer

A)  Cd < Pt < Al 
B)  Al < Pt < Cd 
C)  Al < Cd < Pt 
D)  Cd < Al < Pt 
E)  Pt < Cd < Al 
A)  Cd < Pt < Al 
B)  Al < Pt < Cd 
C)  Al < Cd < Pt 
D)  Cd < Al < Pt 
E)  Pt < Cd < Al

Question 4

What is the general electronic configuration (where n = principal quantum number) that best describes the halogens as a group?

Accepted Answer

A)  ns1np6 
B)  ns2np4 
C)  ns2sp5 
D)  ns2np6 
E)  ns2np3 
A)  ns1np6 
B)  ns2np4 
C)  ns2sp5 
D)  ns2np6 
E)  ns2np3

Question 5

Which of the following has the largest radius?

Accepted Answer

A)  Cl- 
B)  Ar 
C)  Sc3+ 
D)  K+ 
E)  P3- 
A)  Cl- 
B)  Ar 
C)  Sc3+ 
D)  K+ 
E)  P3-

Question 6

List in order of increasing atomic size: Sr, Se, Cs, Ga, In.

Accepted Answer

A)  Se < Ga < In < Sr < Cs 
B)  Ga < In < Se < Cs < Sr 
C)  Sr < In < Ga < Se < Cs 
D)  In < Ga < Cs < Se < Sr 
E)  Cs < Ga < Se < Sr < In 
A)  Se < Ga < In < Sr < Cs 
B)  Ga < In < Se < Cs < Sr 
C)  Sr < In < Ga < Se < Cs 
D)  In < Ga < Cs < Se < Sr 
E)  Cs < Ga < Se < Sr < In

Question 7

List in order of increasing atomic size: F, Na, K, Mg, Ne.

Accepted Answer

A)  K < Mg < Ne < Na < F 
B)  Ne < Mg < K < Na < F 
C)  Ne < F < Mg < Na < K 
D)  Mg < F < Ne < Na < K 
E)  K < Na < Mg < F < Ne 
A)  K < Mg < Ne < Na < F 
B)  Ne < Mg < K < Na < F 
C)  Ne < F < Mg < Na < K 
D)  Mg < F < Ne < Na < K 
E)  K < Na < Mg < F < Ne

Question 8

Can metal atoms form negative ions in the gaseous state? Explain.

Accepted Answer

A)  No, an electron cannot be added. 
B)  No, only a liquid can be ionized. 
C)  Yes, electrons can be added to a Li half-filled 2s orbital. 
D)  Yes, electrons can be removed from a Li half-filled 2s orbital. 
E)  No, the 2s orbital is completely filled. 
A)  No, an electron cannot be added. 
B)  No, only a liquid can be ionized. 
C)  Yes, electrons can be added to a Li half-filled 2s orbital. 
D)  Yes, electrons can be removed from a Li half-filled 2s orbital. 
E)  No, the 2s orbital is completely filled.

Question 9

List in order of increasing size: Cl-, Ar, K+, S2-, Ca2+.

Accepted Answer

A)  Ca2+ + - 2- 
B)  S2- - + 2+ 
C)  Ca2+ 2- + - 
D)  Cl- + 2- 2+ 
E)  K+ 2- - 2+ 
A)  Ca2+ + - 2- 
B)  S2- - + 2+ 
C)  Ca2+ 2- + - 
D)  Cl- + 2- 2+ 
E)  K+ 2- - 2+

Question 10

Which would you expect to have the highest melting point?

Accepted Answer

A)  CF4 
B)  HI 
C)  HCl 
D)  HBr 
E)  All have the same melting point. 
A)  CF4 
B)  HI 
C)  HCl 
D)  HBr 
E)  All have the same melting point.

Question 11

Which comparison of ionization energies is correct?

Accepted Answer

A)  Cs > Na 
B)  Na > Mg 
C)  Ca > Mg 
D)  Ca+ > Ca 
E)  Ar > He 
A)  Cs > Na 
B)  Na > Mg 
C)  Ca > Mg 
D)  Ca+ > Ca 
E)  Ar > He

Question 12

Which of the following has the smallest radius?

Accepted Answer

A)  Yb3+ 
B)  Ho3+ 
C)  Nd3+ 
D)  Gd3+ 
E)  Ce3+ 
A)  Yb3+ 
B)  Ho3+ 
C)  Nd3+ 
D)  Gd3+ 
E)  Ce3+

Question 13

Which of the following atoms has the smallest atomic radius: Br, K, Fe, Cu, Bi?

Accepted Answer

A)  Br 
B)  K 
C)  Fe 
D)  Cu 
E)  Bi 
A)  Br 
B)  K 
C)  Fe 
D)  Cu 
E)  Bi

Question 14

The electron affinity is opposite to the ionization energy.

Accepted Answer

A) True 
 B)False

Question 15

List in order of more negative electron affinity: F, Br, Sb, Rb, Se. (more positive → more negative)

Accepted Answer

A)  Br < Se < Sb < Rb < F 
B)  Se < Rb < Sb < Br < F 
C)  Sb < Br < Rb < Se < F 
D)  Br < F < Rb < Sb < Se 
E)  Rb < Sb < Se < Br < F 
A)  Br < Se < Sb < Rb < F 
B)  Se < Rb < Sb < Br < F 
C)  Sb < Br < Rb < Se < F 
D)  Br < F < Rb < Sb < Se 
E)  Rb < Sb < Se < Br < F

Question 16

List in order of increasing number of unpaired electrons: N, Na, Si, Cr, Ar.

Accepted Answer

A)  Cr < Si < Na < N < Ar 
B)  Ar < Cr < N < Na < Si 
C)  Ar < Cr < Si < Na < N 
D)  N < Na < Cr < Si < Ar 
E)  Ar < Na < Si < N < Cr 
A)  Cr < Si < Na < N < Ar 
B)  Ar < Cr < N < Na < Si 
C)  Ar < Cr < Si < Na < N 
D)  N < Na < Cr < Si < Ar 
E)  Ar < Na < Si < N < Cr

Question 17

Which of the following has the most unpaired electrons: Na, Mn2+, S, N, Ar?

Accepted Answer

A)  Na 
B)  Mn2+ 
C)  S 
D)  N 
E)  Ar 
A)  Na 
B)  Mn2+ 
C)  S 
D)  N 
E)  Ar

Question 18

Which of the following has the largest radius?

Accepted Answer

A)  Se2- 
B)  Kr 
C)  Rb+ 
D)  Br- 
E)  Y3+ 
A)  Se2- 
B)  Kr 
C)  Rb+ 
D)  Br- 
E)  Y3+

Question 19

Which of the following has the smallest second ionization energy?

Accepted Answer

A)  Si 
B)  Mg 
C)  Al 
D)  P 
A)  Si 
B)  Mg 
C)  Al 
D)  P

Question 20

Which species is diamagnetic?

Accepted Answer

A)  atomic sodium 
B)  atomic fluorine 
C)  iron(III) ion 
D)  calcium(II) ion 
E)  cobalt(II) ion 
A)  atomic sodium 
B)  atomic fluorine 
C)  iron(III) ion 
D)  calcium(II) ion 
E)  cobalt(II) ion

Exam 9: The Periodic Table and Some Atomic Properties

Which of the following is an amphoteric oxide?

Which 1+ ion is isoelectronic with S2-?

Arrange the following elements in order of increasing metallic character: Al, Pt, Cd.

What is the general electronic configuration (where n = principal quantum number) that best describes the halogens as a group?

Which of the following has the largest radius?

List in order of increasing atomic size: Sr, Se, Cs, Ga, In.

List in order of increasing atomic size: F, Na, K, Mg, Ne.

Can metal atoms form negative ions in the gaseous state? Explain.

List in order of increasing size: Cl-, Ar, K+, S2-, Ca2+.

Which would you expect to have the highest melting point?

Which comparison of ionization energies is correct?

Which of the following has the smallest radius?

Which of the following atoms has the smallest atomic radius: Br, K, Fe, Cu, Bi?

The electron affinity is opposite to the ionization energy.

List in order of more negative electron affinity: F, Br, Sb, Rb, Se. (more positive → more negative)

List in order of increasing number of unpaired electrons: N, Na, Si, Cr, Ar.

Which of the following has the most unpaired electrons: Na, Mn2+, S, N, Ar?

Which of the following has the largest radius?

Which of the following has the smallest second ionization energy?

Which species is diamagnetic?

Matter - Its Properties and Measurement

Atoms and the Atomic Theory

Chemical Compounds

Chemical Reactions

Introduction to Reactions in Aqueous Solutions

Gases

Thermochemistry

Electrons in Atoms

Chemical Bonding I: Basic Concepts

Chemical Bonding II: Additional Aspects

Intermolecular Forces: Liquids and Solids

Solutions and Their Physical Properties

Chemical Kinetics

Principles of Chemical Equilibrium

Acids and Bases

Additional Aspects of Acid-Base Equilibria

Solubility and Complex-Ion Equilibria

Spontaneous Change: Entropy and Free Energy

Electrochemistry

Main Group Elements I: Groups 1, 2, 13, and 14

Main Group Elements II: Groups 18, 17, 16, 15, and Hydrogen

The Transition Elements

Complex Ions and Coordination Compounds

Nuclear Chemistry 1-41

Structures of Organic Compounds

Reactions of Organic Compounds

Chemistry of the Living State

Filters

Which 1+ ion is isoelectronic with S^2-?

List in order of increasing size: Cl^-, Ar, K⁺, S^{2^-}, Ca^2⁺.

Which of the following has the most unpaired electrons: Na, Mn²⁺, S, N, Ar?