Question 1

All of the following ground-state electron configurations are correct except

Accepted Answer

A)  V: [Ar]4s24d3 
B)  K: [Ar]4s1 
C)  Sb: [Kr]4d105s25p3 
D)  Cr: [Ar]3d54s1 
E)  Te: [Kr]4d105s25p4 
A)  V: [Ar]4s24d3 
B)  K: [Ar]4s1 
C)  Sb: [Kr]4d105s25p3 
D)  Cr: [Ar]3d54s1 
E)  Te: [Kr]4d105s25p4

Question 2

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 3

________ rule states that the most stable arrangement of electrons is that which contains the maximum number of unpaired electrons, all with the same spin direction.

Accepted Answer

The answer of ________ rule states that the most stable...

Question 4

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

Accepted Answer

A)  At 
B)  Bi 
C)  Pb 
D)  Cs 
E)  Po 
A)  At 
B)  Bi 
C)  Pb 
D)  Cs 
E)  Po

Question 5

Rank the following atoms in order decreasing atomic radii: Be, Be, Be, B.

Accepted Answer

A)  B > Be > Be > Be 
B)  Be > B > Be > Be 
C)  Be > Be > B > Be 
D)  Be > Be > Be > B 
E)  B > Be > Be > Be.. 
A)  B > Be > Be > Be 
B)  Be > B > Be > Be 
C)  Be > Be > B > Be 
D)  Be > Be > Be > B 
E)  B > Be > Be > Be..

Question 6

The ground-state electron configuration of a Ni2+ ion is 1s22s22p63s23p63d8 . Therefore, Ni2+ is

Accepted Answer

A)  paramagnetic with two unpaired electrons. 
B)  diamagnetic. 
C)  paramagnetic with one unpaired electron. 
D)  paramagnetic with four unpaired electrons. 
E)  paramagnetic with five unpaired electrons. 
A)  paramagnetic with two unpaired electrons. 
B)  diamagnetic. 
C)  paramagnetic with one unpaired electron. 
D)  paramagnetic with four unpaired electrons. 
E)  paramagnetic with five unpaired electrons.

Question 7

In the context of magnetism, Cu2+ is _____.

Accepted Answer

A)  diamagnetic 
B)  paramagnetic 
C)  ferromagnetic 
D)  ferrimagnetic 
E)  antiferromagnetic 
A)  diamagnetic 
B)  paramagnetic 
C)  ferromagnetic 
D)  ferrimagnetic 
E)  antiferromagnetic

Question 8

The element _____ has the electron configuration [Rn]5f127s2.

Accepted Answer

Question 9

Which of the given ions have the same ground state electron configuration: S2-, N3-, Mg2+, and Br-?

Accepted Answer

A)  N3- and Mg2+ 
B)  S2-, N3-, and Br- 
C)  S2- and Br- 
D)  Mg2+ and Br- 
E)  S2-, N3-, Mg2+, and Br- 
A)  N3- and Mg2+ 
B)  S2-, N3-, and Br- 
C)  S2- and Br- 
D)  Mg2+ and Br- 
E)  S2-, N3-, Mg2+, and Br-

Question 10

Which of the following atoms is diamagnetic in its ground state?

Accepted Answer

A)  mercury (Hg) 
B)  tin (Sn) 
C)  rhenium (Re) 
D)  berkelium (Bk) 
E)  phosphorus (P) 
A)  mercury (Hg) 
B)  tin (Sn) 
C)  rhenium (Re) 
D)  berkelium (Bk) 
E)  phosphorus (P)

Question 11

An atom of which of the following elements has the most negative electron affinity?

Accepted Answer

A)  K 
B)  Sb 
C)  Cl 
D)  Br 
E)  O 
A)  K 
B)  Sb 
C)  Cl 
D)  Br 
E)  O

Question 12

What is the ground state electron configuration for Cr3+?

Accepted Answer

A)  [Ar] 
B)  [Ar]3d74s2 
C)  [Ar]3d14s2 
D)  [Ar]3d24s1 
E)  [Ar]3d3 
A)  [Ar] 
B)  [Ar]3d74s2 
C)  [Ar]3d14s2 
D)  [Ar]3d24s1 
E)  [Ar]3d3

Question 13

The change in energy for the following reaction is referred to as the ____ for boron. 
B(g) + e- → B-(g)

Accepted Answer

A)  oxidation number 
B)  electron affinity 
C)  electronegativity energy 
D)  first ionization energy 
E)  second ionization energy 
A)  oxidation number 
B)  electron affinity 
C)  electronegativity energy 
D)  first ionization energy 
E)  second ionization energy

Question 14

Place the following ions in order from smallest to largest ionic radii: 
K+, Na+, Mg2+, and Al3+.

Accepted Answer

A)  Al3+ 2+ + + 
B)  Na+ 2+ 3+ + 
C)  K+ 2+ + 3+ 
D)  K+ 3+ 2+ + 
E)  Mg2+ 3+ + + 
A)  Al3+ 2+ + + 
B)  Na+ 2+ 3+ + 
C)  K+ 2+ + 3+ 
D)  K+ 3+ 2+ + 
E)  Mg2+ 3+ + +

Question 15

What 2+ ion has the following ground state electron configuration?

Accepted Answer

A)  Mn2+ 
B)  Co2+ 
C)  Ni2+ 
D)  Cu2+ 
E)  Ge2+ 
A)  Mn2+ 
B)  Co2+ 
C)  Ni2+ 
D)  Cu2+ 
E)  Ge2+

Question 16

An atom of which of the following elements has the smallest atomic radius?

Accepted Answer

A)  F 
B)  Rb 
C)  Ca 
D)  Ge 
E)  P 
A)  F 
B)  Rb 
C)  Ca 
D)  Ge 
E)  P

Question 17

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 18

Which of the following statements concerning the Pauli exclusion principle is/are CORRECT?
 	1.	If two electrons occupy the same orbital they must have opposite spins.
 	2.	No two electrons in an atom can have the same four quantum numbers.
 	3.	Electrons with opposing spins are attracted to each other.

Accepted Answer

A)  1 only 
B)  2 only 
C)  3 only 
D)  1 and 2 
E)  1, 2, and 3 
A)  1 only 
B)  2 only 
C)  3 only 
D)  1 and 2 
E)  1, 2, and 3

Question 19

Which of the following ions has the given ground state electron configuration?

Accepted Answer

A)  Cd2+ 
B)  Sr2+ 
C)  Zn2+ 
D)  Sn2+ 
E)  None of these 
A)  Cd2+ 
B)  Sr2+ 
C)  Zn2+ 
D)  Sn2+ 
E)  None of these

Question 20

Which of the following statements concerning the Pauli exclusion principle is/are CORRECT?
1.If two electrons occupy the same orbital they must have opposite spins.
2.No two electrons in an atom can have the same four quantum numbers.
3.Electrons with opposing spins are attracted to each other.

Accepted Answer

A) 1 only 
B) 2 only 
C) 3 only 
D) 1 and 2 
E) 1, 2, and 3 
A) 1 only 
B) 2 only 
C) 3 only 
D) 1 and 2 
E) 1, 2, and 3

Exam 8: The Structure of Atoms and Periodic Trends

All of the following ground-state electron configurations are correct except

Which element has the following ground state electron configuration?

________ rule states that the most stable arrangement of electrons is that which contains the maximum number of unpaired electrons, all with the same spin direction.

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

Rank the following atoms in order decreasing atomic radii: Be, Be, Be, B.

The ground-state electron configuration of a Ni2+ ion is 1s22s22p63s23p63d8 . Therefore, Ni2+ is

In the context of magnetism, Cu2+ is _____.

The element _____ has the electron configuration [Rn]5f127s2.

Which of the given ions have the same ground state electron configuration: S2-, N3-, Mg2+, and Br-?

Which of the following atoms is diamagnetic in its ground state?

An atom of which of the following elements has the most negative electron affinity?

What is the ground state electron configuration for Cr3+?

The change in energy for the following reaction is referred to as the ____ for boron. B(g) + e- → B-(g)

Place the following ions in order from smallest to largest ionic radii: K+, Na+, Mg2+, and Al3+.

What 2+ ion has the following ground state electron configuration?

An atom of which of the following elements has the smallest atomic radius?

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

Which of the following statements concerning the Pauli exclusion principle is/are CORRECT? 1. If two electrons occupy the same orbital they must have opposite spins. 2. No two electrons in an atom can have the same four quantum numbers. 3. Electrons with opposing spins are attracted to each other.

Which of the following ions has the given ground state electron configuration?

Which of the following statements concerning the Pauli exclusion principle is/are CORRECT? 1.If two electrons occupy the same orbital they must have opposite spins. 2.No two electrons in an atom can have the same four quantum numbers. 3.Electrons with opposing spins are attracted to each other.

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

The ground-state electron configuration of a Ni²⁺ ion is 1s²2s²2p⁶3s²3p⁶3d⁸ . Therefore, Ni²⁺ is

In the context of magnetism, Cu²⁺ is _____.

The element _____ has the electron configuration [Rn]5f¹²7s².

Which of the given ions have the same ground state electron configuration: S^2-, N^3-, Mg²⁺, and Br^-?

What is the ground state electron configuration for Cr³⁺?

The change in energy for the following reaction is referred to as the ____ for boron. B(g) + e^- → B^-(g)

Place the following ions in order from smallest to largest ionic radii: K⁺, Na⁺, Mg²⁺, and Al³⁺.