Question 1

Which of the following orbital diagrams represents a diamagnetic atom?

Accepted Answer

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

Question 2

According to the Aufbau principle, which of the following subshells is typically filled next after the 4s subshell?

Accepted Answer

A)  3d 
B)  4s 
C)  3p 
D)  2p 
E)  2s 
A)  3d 
B)  4s 
C)  3p 
D)  2p 
E)  2s

Question 3

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

Accepted Answer

A)  [Ne]3s33p3 
B)  [Ar]3s23p4 
C)  [Ar]3p6 
D)  [Ne]3s23p4 
E)  [Ar]3p6.. 
A)  [Ne]3s33p3 
B)  [Ar]3s23p4 
C)  [Ar]3p6 
D)  [Ne]3s23p4 
E)  [Ar]3p6..

Question 4

Rank the following ions in order of decreasing ionic radii: 
Al3+, Mg2+, Al3+, Al3+.

Accepted Answer

A)  Al3+ > Al3+ > Mg2+ > Al3+ 
B)  Al3+ > Al3+ > Mg2+ > Al3+.. 
C)  Al3+> Mg2+ > Al3+ > Al3+ 
D)  Al3+ > Mg2+ > Al3+ > Al3+.. 
E)  Mg2+ > Al3+ > Al3+ > Al3+ 
A)  Al3+ > Al3+ > Mg2+ > Al3+ 
B)  Al3+ > Al3+ > Mg2+ > Al3+.. 
C)  Al3+> Mg2+ > Al3+ > Al3+ 
D)  Al3+ > Mg2+ > Al3+ > Al3+.. 
E)  Mg2+ > Al3+ > Al3+ > Al3+

Question 5

A metal phosphide forms when potassium reacts with elemental phosphorus. What is the most likely formula of this metal phosphide?

Accepted Answer

A)  KP 
B)  K3P 
C)  K2P3 
D)  K3P2 
E)  KP3 
A)  KP 
B)  K3P 
C)  K2P3 
D)  K3P2 
E)  KP3

Question 6

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 7

The small, but important, energy differences between 3s, 3p, and 3d electrons is a consequence of

Accepted Answer

A)  the number of electrons they can hold 
B)  their principal quantum number 
C)  the Heisenberg uncertainty principle 
D)  thier effective nuclear charge 
E)  Hund's rule 
A)  the number of electrons they can hold 
B)  their principal quantum number 
C)  the Heisenberg uncertainty principle 
D)  thier effective nuclear charge 
E)  Hund's rule

Question 8

Which of the following electron configurations corresponds to the ground state of an atom of a transition element?

Accepted Answer

A)  1s22s22p1 
B)  1s22s22p63s23p63d104s24p3 
C)  1s22s22p63s23p63d14s2 
D)  1s22s22p63s23p64s1 
E)  1s22s22p63s23p4 
A)  1s22s22p1 
B)  1s22s22p63s23p63d104s24p3 
C)  1s22s22p63s23p63d14s2 
D)  1s22s22p63s23p64s1 
E)  1s22s22p63s23p4

Question 9

Which of the following statements is true concerning the electron configuration [Xe]6p2?

Accepted Answer

A)  This configuration cannot be the ground-state electron configuration for a Ba atom because it violates the Pauli exclusion principle. 
B)  This configuration cannot be the ground-state electron configuration for a Ba atom because it violates Hund's rule. 
C)  This configuration is the ground-state electron configuration for a Ba atom. 
D)  This configuration cannot be the ground-state electron configuration for a Ba atom because it violates the Heisenberg uncertainty principle. 
E)  This configuration cannot be the ground-state electron configuration for a Ba atom because it violates the Aufbau principle. 
A)  This configuration cannot be the ground-state electron configuration for a Ba atom because it violates the Pauli exclusion principle. 
B)  This configuration cannot be the ground-state electron configuration for a Ba atom because it violates Hund's rule. 
C)  This configuration is the ground-state electron configuration for a Ba atom. 
D)  This configuration cannot be the ground-state electron configuration for a Ba atom because it violates the Heisenberg uncertainty principle. 
E)  This configuration cannot be the ground-state electron configuration for a Ba atom because it violates the Aufbau principle.

Question 10

Which of the following groups is a part of the s-block elements?

Accepted Answer

A)  Group 2A 
B)  Group 6A 
C)  Group 8A 
D)  Group 7A 
E)  Group 5A 
A)  Group 2A 
B)  Group 6A 
C)  Group 8A 
D)  Group 7A 
E)  Group 5A

Question 11

Which of the following sets of quantum numbers is allowed?

Accepted Answer

A)  n = 2, $\ell$ = 1, $m _ { \ell }$ = +1/2, ms = -1/2 
B)  n = 3, $\ell$ = 2, $m _ { \ell }$ = +1, ms = +1 
C)  n = 4, $\ell$ = 1, $m _ { \ell }$ = 0, ms = -1/2 
D)  n = 4, $\ell$ = 3, $m _ { \ell }$ = -1, ms = 0 
E)  n = 5, $\ell$ = 2, $m _ { \ell }$ = +2, ms = -1 
A)  n = 2, $\ell$ = 1, $m _ { \ell }$ = +1/2, ms = -1/2 
B)  n = 3, $\ell$ = 2, $m _ { \ell }$ = +1, ms = +1 
C)  n = 4, $\ell$ = 1, $m _ { \ell }$ = 0, ms = -1/2 
D)  n = 4, $\ell$ = 3, $m _ { \ell }$ = -1, ms = 0 
E)  n = 5, $\ell$ = 2, $m _ { \ell }$ = +2, ms = -1

Question 12

What noble gas core precedes the valence shell ground state electron configuration for potassium (K)?

Accepted Answer

A)  [Ar] 
B)  [Rn] 
C)  [Kr] 
D)  [Ne] 
E)  [Xe] 
A)  [Ar] 
B)  [Rn] 
C)  [Kr] 
D)  [Ne] 
E)  [Xe]

Question 13

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

Accepted Answer

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

Question 14

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 $m _ { \ell }$ 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 $m _ { \ell }$ 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 15

The f-block elements are also referred to as the ________ and actinides.

Accepted Answer

The answer of The f-block elements are also referred to...

Question 16

Which of the following cations has the same number of unpaired electrons as Fe2+?

Accepted Answer

A)  Ni2+ 
B)  Fe3+ 
C)  Cr2+ 
D)  Mn2+ 
E)  Co2+ 
A)  Ni2+ 
B)  Fe3+ 
C)  Cr2+ 
D)  Mn2+ 
E)  Co2+

Question 17

Which ground-state electron configuration is incorrect?

Accepted Answer

A)  Br: [Ar]3d104s24p5 
B)  K: [Ar]4s1 
C)  Ni: [Ar]3d5 
D)  Mg: 1s22s22p63s2 
E)  Co: [Ar]3d74s2 
A)  Br: [Ar]3d104s24p5 
B)  K: [Ar]4s1 
C)  Ni: [Ar]3d5 
D)  Mg: 1s22s22p63s2 
E)  Co: [Ar]3d74s2

Question 18

Which of the following elements has the ground state electron configuration [Ar]3d104s1?

Accepted Answer

A)  Cu 
B)  Zn 
C)  Ge 
D)  Ag 
E)  Cd 
A)  Cu 
B)  Zn 
C)  Ge 
D)  Ag 
E)  Cd

Question 19

The complete electron configuration of tin is _____.

Accepted Answer

A)  1s22s22p63s23p64s23d104p65s24d105p2 
B)  1s22s22p63s23p64s24p65s24d105d105p2 
C)  1s22s22p63s23p64s23d104d104p2 
D)  1s22s22p63s23p64s23d104p65s24d105d105p2 
E)  None of these 
A)  1s22s22p63s23p64s23d104p65s24d105p2 
B)  1s22s22p63s23p64s24p65s24d105d105p2 
C)  1s22s22p63s23p64s23d104d104p2 
D)  1s22s22p63s23p64s23d104p65s24d105d105p2 
E)  None of these

Question 20

Which of the following elements is found in the d-block of the periodic table?

Accepted Answer

A)  Ir 
B)  Tb 
C)  Li 
D)  Cl 
E)  None of these 
A)  Ir 
B)  Tb 
C)  Li 
D)  Cl 
E)  None of these

Exam 8: The Structure of Atoms and Periodic Trends

Which of the following orbital diagrams represents a diamagnetic atom?

According to the Aufbau principle, which of the following subshells is typically filled next after the 4s subshell?

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

Rank the following ions in order of decreasing ionic radii: Al3+, Mg2+, Al3+, Al3+.

A metal phosphide forms when potassium reacts with elemental phosphorus. What is the most likely formula of this metal phosphide?

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

The small, but important, energy differences between 3s, 3p, and 3d electrons is a consequence of

Which of the following electron configurations corresponds to the ground state of an atom of a transition element?

Which of the following statements is true concerning the electron configuration [Xe]6p2?

Which of the following groups is a part of the s-block elements?

Which of the following sets of quantum numbers is allowed?

What noble gas core precedes the valence shell ground state electron configuration for potassium (K)?

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

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

The f-block elements are also referred to as the ________ and actinides.

Which of the following cations has the same number of unpaired electrons as Fe2+?

Which ground-state electron configuration is incorrect?

Which of the following elements has the ground state electron configuration [Ar]3d104s1?

The complete electron configuration of tin is _____.

Which of the following elements is found in the d-block of the periodic table?

Basic Concepts of Chemistry

Lets 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 Solid State

Solutions and Their Behavior

Chemical Kinetics: the Rates of Chemical Reactions

Principles of Chemical Reactivity: Equilibria

Principles of Chemical Reactivity: the Chemistry of Acids and Bases

Principles of Chemical Reactivity: Other Aspects of Aqueous Equilibria

Principles of Chemical Reactivity: Entropy and Free Energy

Principles of Chemical 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 of the following statements is true concerning the electron configuration [Xe]6p²?

Which of the following cations has the same number of unpaired electrons as Fe²⁺?

Which of the following elements has the ground state electron configuration [Ar]3d¹⁰4s¹?