Question 1

What is the ground-state electron configuration of sulfur (S)?

Accepted Answer

A)    
B)    
C)    
D)    
E)    
A)    
B)    
C)    
D)    
E)

Question 2

Which element has the following ground state electron configuration?

Accepted Answer

A)  B 
B)  Li 
C)  Si 
D)  Be 
E)  C 
A)  B 
B)  Li 
C)  Si 
D)  Be 
E)  C

Question 3

Which of the following sets of quantum numbers is allowed?

Accepted Answer

A)  n = 2,   = 1,   = +1/2,ms = -1/2 
B)  n = 3,   = 2,   = +1,ms = +1 
C)  n = 4,   = 1,   = 0,ms = -1/2 
D)  n = 4,   = 3,   = -1,ms = 0 
E)  n = 5,   = 2,   = +2,ms = -1 
A)  n = 2,   = 1,   = +1/2,ms = -1/2 
B)  n = 3,   = 2,   = +1,ms = +1 
C)  n = 4,   = 1,   = 0,ms = -1/2 
D)  n = 4,   = 3,   = -1,ms = 0 
E)  n = 5,   = 2,   = +2,ms = -1

Question 4

Which 1+ ion has the ground state electron configuration [Kr]4d10?

Accepted Answer

A)  Ru 
B)  Au 
C)  Ag 
D)  In 
E)  Cd 
A)  Ru 
B)  Au 
C)  Ag 
D)  In 
E)  Cd

Question 5

An element that has the same ground state valence-shell electron configuration as germanium is

Accepted Answer

A)  tin. 
B)  krypton. 
C)  potassium. 
D)  beryllium. 
E)  boron. 
A)  tin. 
B)  krypton. 
C)  potassium. 
D)  beryllium. 
E)  boron.

Question 6

For which one of the following elements is the second ionization energy over ten times larger than its first ionization energy?

Accepted Answer

A)  B 
B)  N 
C)  Li 
D)  Ne 
E)  Cu 
A)  B 
B)  N 
C)  Li 
D)  Ne 
E)  Cu

Question 7

As one moves horizontally from left to right across a period,the effective ________ charge increases,resulting in decreasing atomic radii.

Accepted Answer

The answer of As one moves horizontally from left to...

Question 8

Hund's rule states that the most stable arrangement of electrons (for a ground state electron configuration)

Accepted Answer

A)  has a filled valence shell of electrons. 
B)  has three electrons per orbital,each with identical spins. 
C)  has   values greater than or equal to +1. 
D)  has the maximum number of unpaired electrons,all with the same spin. 
E)  has two electrons per orbital,each with opposing spins. 
A)  has a filled valence shell of electrons. 
B)  has three electrons per orbital,each with identical spins. 
C)  has   values greater than or equal to +1. 
D)  has the maximum number of unpaired electrons,all with the same spin. 
E)  has two electrons per orbital,each with opposing spins.

Question 9

What is the charge formed by alkaline earth metals when they react with nonmetals?

Accepted Answer

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

Question 10

Place the following atoms in order of increasing atomic radii: Se,Sb,Br,and Te.

Accepted Answer

A)  Br < Se < Te < Sb 
B)  Se < Br < Sb < Te 
C)  Se < Br < Te < As 
D)  Sb < Te < Se < Br 
E)  Te < Sb < Se < Br 
A)  Br < Se < Te < Sb 
B)  Se < Br < Sb < Te 
C)  Se < Br < Te < As 
D)  Sb < Te < Se < Br 
E)  Te < Sb < Se < Br

Question 11

Which element has the following ground state electron configuration?

Accepted Answer

A)  In 
B)  Y 
C)  Nb 
D)  Tl 
E)  Ga 
A)  In 
B)  Y 
C)  Nb 
D)  Tl 
E)  Ga

Question 12

Which group of the periodic table of elements forms only 2+ ions?

Accepted Answer

A)  group 1A 
B)  group 2A 
C)  group 1B 
D)  group 7A 
E)  group 8A 
A)  group 1A 
B)  group 2A 
C)  group 1B 
D)  group 7A 
E)  group 8A

Question 13

Which is the correct valence shell orbital box notation for the ground state electron configuration of Co?
$~~~~~~~~$3d$~~~~~~~~$$~~~~~~~~$$~~~~~~~~$$~~~~~~~~$$~~~~~~~~$$~~~~~~~~$ 4s

Accepted Answer

A)    
B)    
C)    
D)    
E)    
A)    
B)    
C)    
D)    
E)

Question 14

Which of the following species would you expect to have the largest radius?

Accepted Answer

A)    
B)  P 
C)    
D)    
E)    
A)    
B)  P 
C)    
D)    
E)

Question 15

What is the maximum number of electrons that can occupy $\underline{\text{ one }}$  d orbital?

Accepted Answer

A)  1 
B)  2 
C)  6 
D)  10 
E)  14 
A)  1 
B)  2 
C)  6 
D)  10 
E)  14

Question 16

The change in energy for which of the following processes corresponds to the first ionization energy of calcium?

Accepted Answer

A)    
B)    
C)    
D)    
E)    
A)    
B)    
C)    
D)    
E)

Question 17

How many electrons can be described by the quantum numbers n= 3 and l= 1?

Accepted Answer

A)  10 
B)  2 
C)  14 
D)  18 
E)  6 
A)  10 
B)  2 
C)  14 
D)  18 
E)  6

Question 18

What is a possible set of quantum numbers for an unpaired electron in the orbital box diagram below?

Accepted Answer

A)  n = 1,   = 1,   = -1,ms = +1/2 
B)  n = 4,   = 2,   = -1,ms = -1/2 
C)  n = 5,   = 2,   = -2,ms = +1/2 
D)  n = 5,   = 0,   = 0,ms = -1/2 
E)  n = 5,   = 1,   = -1,ms = +1/2 
A)  n = 1,   = 1,   = -1,ms = +1/2 
B)  n = 4,   = 2,   = -1,ms = -1/2 
C)  n = 5,   = 2,   = -2,ms = +1/2 
D)  n = 5,   = 0,   = 0,ms = -1/2 
E)  n = 5,   = 1,   = -1,ms = +1/2

Question 19

An atom of which of the following elements has the smallest ionization energy?

Accepted Answer

A)  Cl 
B)  P 
C)  Si 
D)  Na 
E)  S 
A)  Cl 
B)  P 
C)  Si 
D)  Na 
E)  S

Question 20

How many unpaired electrons are found in the ground state electron configuration of mercury (Hg)?

Accepted Answer

A)  0 
B)  1 
C)  2 
D)  3 
E)  5 
A)  0 
B)  1 
C)  2 
D)  3 
E)  5

Exam 8: The Structure of Atoms and Periodic Trends

What is the ground-state electron configuration of sulfur (S)?

Which element has the following ground state electron configuration?

Which of the following sets of quantum numbers is allowed?

Which 1+ ion has the ground state electron configuration [Kr]4d10?

An element that has the same ground state valence-shell electron configuration as germanium is

For which one of the following elements is the second ionization energy over ten times larger than its first ionization energy?

As one moves horizontally from left to right across a period,the effective ________ charge increases,resulting in decreasing atomic radii.

Hund's rule states that the most stable arrangement of electrons (for a ground state electron configuration)

What is the charge formed by alkaline earth metals when they react with nonmetals?

Place the following atoms in order of increasing atomic radii: Se,Sb,Br,and Te.

Which element has the following ground state electron configuration?

Which group of the periodic table of elements forms only 2+ ions?

Which is the correct valence shell orbital box notation for the ground state electron configuration of Co? ~~~~~~~~ 3d ~~~~~~~~ ~~~~~~~~ ~~~~~~~~ ~~~~~~~~ ~~~~~~~~ ~~~~~~~~ 4s

Which of the following species would you expect to have the largest radius?

What is the maximum number of electrons that can occupy one ‾\underline{\text{ one }} one ​ d orbital?

The change in energy for which of the following processes corresponds to the first ionization energy of calcium?

How many electrons can be described by the quantum numbers n= 3 and l= 1?

What is a possible set of quantum numbers for an unpaired electron in the orbital box diagram below?

An atom of which of the following elements has the smallest ionization energy?

How many unpaired electrons are found in the ground state electron configuration of mercury (Hg)?

Basic Concepts of Chemistry

Mathlets Review: The Tools of Quantitative Chemistry

Atoms, molecules, and Ions

Chemical Reactions

Stoichiometry: Quantitative Information About Chemical Reactions

Principles of Chemical Reactivity: Energy and Chemical Reactions

The Structure of Atoms

Bonding and Molecular Structure

Bonding and Molecular Structure: Orbital Hybridization and Molecular Orbitals

Gases and Their Properties

Intermolecular Forces and Liquids

The Chemistry of Solids

Solutions and Their Behavior

Chemical Kinetics: the Rates of Chemical Reactions

Principles of Reactivity: Chemical Equilibria

The Chemistry of Acids and Bases

Principles of Reactivity: Other Aspects of Aqueous Equilibria

Entropy and Free Energy

Principles of Reactivity: Electron Transfer Reactions

Environmental Chemistry Earths Environment,energy,and Sustainability

The Chemistry of the Main Group Elements

The Chemistry of the Transition Elements

Carbon: Not Just Another Element

Biochemistry

Nuclear Chemistry

Filters

Which 1+ ion has the ground state electron configuration [Kr]4d¹⁰?

Which is the correct valence shell orbital box notation for the ground state electron configuration of Co? $$ 3d $$ $$ $$ $$ $$ $$ 4s

What is the maximum number of electrons that can occupy $\underline{\text{ one }}$ d orbital?