Question 1

Identify the number of valence electrons for Pb.

Accepted Answer

A) 4 
B) 2 
C) 28 
D) 12 
E) 26 
A) 4 
B) 2 
C) 28 
D) 12 
E) 26

Question 2

List the noble gas that has the highest ionization energy.

Accepted Answer

The answer of List the noble gas that has the...

Question 3

Identify the number of core electrons for Cd.

Accepted Answer

A) 44 
B) 48 
C) 46 
D) 45 
E) 47 
A) 44 
B) 48 
C) 46 
D) 45 
E) 47

Question 4

An element that has the valence electron configuration 4s24p4 belongs to which period and group?

Accepted Answer

A) period 4; group 16 
B) period 4; group 6 
C) period 4; group 8 
D) period 5; group 6 
E) period 5; group 18 
A) period 4; group 16 
B) period 4; group 6 
C) period 4; group 8 
D) period 5; group 6 
E) period 5; group 18

Question 5

Use the periodic table to predict the most stable oxidation state for the following element: Ca

Accepted Answer

A) +1 
B) +2 
C) +3 
D) -1 
E) -2 
A) +1 
B) +2 
C) +3 
D) -1 
E) -2

Question 6

Match the following.

-number of unpaired electrons in Na

Accepted Answer

A) 1 
B) electrons in the outermost shell 
C) electrons in completed shells 
D) 2 
A) 1 
B) electrons in the outermost shell 
C) electrons in completed shells 
D) 2

Question 7

Identify the complete electronic configuration for Mn.

Accepted Answer

A) 1s22s22p63s23p64s24d5 
B) 1s22s22p63s23p64s13d6 
C) 1s22s22p63s23p64s23d5 
D) 1s22s22p63s23p64s24p5 
A) 1s22s22p63s23p64s24d5 
B) 1s22s22p63s23p64s13d6 
C) 1s22s22p63s23p64s23d5 
D) 1s22s22p63s23p64s24p5

Question 8

An element that has the valence electron configuration 2s22p2 belongs to which period and group?

Accepted Answer

A) period 1; group 18 
B) period 2; group 12 
C) period 2; group 4 
D) period 2; group 14 
E) period 2; group 8 
A) period 1; group 18 
B) period 2; group 12 
C) period 2; group 4 
D) period 2; group 14 
E) period 2; group 8

Question 9

How many of the following elements have two unpaired electrons in the ground state? C O Ti Si

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 4 
A) 1 
B) 2 
C) 3 
D) 4

Question 10

Place the following elements in order of decreasing atomic radius. Xe Rb Ar

Accepted Answer

A) Ar > Xe > Rb 
B) Xe > Rb > Ar 
C) Ar > Rb > Xe 
D) Rb > Xe > Ar 
E) Rb > Ar > Xe 
A) Ar > Xe > Rb 
B) Xe > Rb > Ar 
C) Ar > Rb > Xe 
D) Rb > Xe > Ar 
E) Rb > Ar > Xe

Question 11

An element that has the valence electron configuration 5s25p3 belongs to which period and group?

Accepted Answer

A) period 5; group 15 
B) period 5; group 2 
C) period 5; group 3 
D) period 5; group 5 
E) period 4; group 13 
A) period 5; group 15 
B) period 5; group 2 
C) period 5; group 3 
D) period 5; group 5 
E) period 4; group 13

Question 12

Of the following, which element has the highest first ionization energy?

Accepted Answer

A) beryllium 
B) boron 
C) carbon 
D) lithium 
A) beryllium 
B) boron 
C) carbon 
D) lithium

Question 13

What is the general valence-electron ground-state electron configuration for neutral alkaline earth metals?

Accepted Answer

A) ns1 
B) ns2 
C) 1s22s1 
D) 1s22s2 
A) ns1 
B) ns2 
C) 1s22s1 
D) 1s22s2

Question 14

Identify the species that has the smallest radius.

Accepted Answer

A) cation 
B) anion 
C) neutral 
D) All of the above are the same size. 
A) cation 
B) anion 
C) neutral 
D) All of the above are the same size.

Question 15

An element that has the valence electron configuration 6s25d4 belongs to which period and group?

Accepted Answer

A) period 6; group 16 
B) period 6; group 12 
C) period 6; group 4 
D) period 6; group 6 
E) period 6; group 2 
A) period 6; group 16 
B) period 6; group 12 
C) period 6; group 4 
D) period 6; group 6 
E) period 6; group 2

Question 16

Of the following, which element has the highest first ionization energy?

Accepted Answer

A) Sr 
B) Rb 
C) Na 
D) Ca 
A) Sr 
B) Rb 
C) Na 
D) Ca

Question 17

Of the following, which element has the highest first ionization energy?

Accepted Answer

A) Al 
B) Cl 
C) Na 
D) P 
A) Al 
B) Cl 
C) Na 
D) P

Question 18

Identify the ground-state electron configuration for Pb.

Accepted Answer

A) [Xe]6s26p2 
B) [Xe]6s25d106p2 
C) [Xe]6s25f146d106p2 
D) [Xe]6s24f145d106p2 
E) [Xe]6s24f145d106s26p2 
A) [Xe]6s26p2 
B) [Xe]6s25d106p2 
C) [Xe]6s25f146d106p2 
D) [Xe]6s24f145d106p2 
E) [Xe]6s24f145d106s26p2

Question 19

Use the periodic table to predict the most stable oxidation state for the following element: Ga

Accepted Answer

A) +1 
B) +2 
C) +3 
D) -1 
E) -2 
A) +1 
B) +2 
C) +3 
D) -1 
E) -2

Question 20

Match the following.

-core electrons

Accepted Answer

A) 1 
B) electrons in the outermost shell 
C) electrons in completed shells 
D) 2 
A) 1 
B) electrons in the outermost shell 
C) electrons in completed shells 
D) 2

Exam 8: Periodic Properties of the Elements

Identify the number of valence electrons for Pb.

List the noble gas that has the highest ionization energy.

Identify the number of core electrons for Cd.

An element that has the valence electron configuration 4s24p4 belongs to which period and group?

Use the periodic table to predict the most stable oxidation state for the following element: Ca

Match the following. -number of unpaired electrons in Na

Identify the complete electronic configuration for Mn.

An element that has the valence electron configuration 2s22p2 belongs to which period and group?

How many of the following elements have two unpaired electrons in the ground state? C O Ti Si

Place the following elements in order of decreasing atomic radius. Xe Rb Ar

An element that has the valence electron configuration 5s25p3 belongs to which period and group?

Of the following, which element has the highest first ionization energy?

What is the general valence-electron ground-state electron configuration for neutral alkaline earth metals?

Identify the species that has the smallest radius.

An element that has the valence electron configuration 6s25d4 belongs to which period and group?

Of the following, which element has the highest first ionization energy?

Of the following, which element has the highest first ionization energy?

Identify the ground-state electron configuration for Pb.

Use the periodic table to predict the most stable oxidation state for the following element: Ga

Match the following. -core electrons

Units of Measurement for Physical and Chemical Change

Atoms and Elements

Molecules, Compounds, and Nomenclature

Chemical Reactions and Stoichiometry

Gases

Thermochemistry

The Quantum-Mechanical Model of the Atom

Chemical Bonding I: Lewis Theory

Chemical Bonding Ii: Molecular Shapes, Valence Bond Theory, and Molecular Orbital Theory

Liquids, Solids, and Intermolecular Forces

Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Aqueous Ionic Equilibrium

Gibbs Energy and Thermodynamics

Electrochemistry

Radioactivity and Nuclear Chemistry

Organic Chemistry I: Structures

Organic Chemistry II: Reactions

Biochemistry

Chemistry of the Nonmetals

Metals and Metallury

Transition Metals and Coordination Compounds

Filters

An element that has the valence electron configuration 4s²4p⁴ belongs to which period and group?

An element that has the valence electron configuration 2s²2p² belongs to which period and group?

An element that has the valence electron configuration 5s²5p³ belongs to which period and group?

An element that has the valence electron configuration 6s²5d⁴ belongs to which period and group?