Question 1

In a hydrogen atom, an electron in a ________ orbital can absorb a photon, but cannot emit a photon.

Accepted Answer

A) 3s 
B) 2s 
C) 3p 
D) 1s 
E) 3f 
A) 3s 
B) 2s 
C) 3p 
D) 1s 
E) 3f

Question 2

The wavelength of light emitted from a traffic light having a frequency of 2.74 × 1014 Hz is ________ nm.

Accepted Answer

A) 1090 
B) 109 
C) 54.7 
D) 36.5 
E) 50.0 
A) 1090 
B) 109 
C) 54.7 
D) 36.5 
E) 50.0

Question 3

The electron density of the 2s orbital is asymmetric.

Accepted Answer

A) True 
 B)False

Question 4

The condensed electron configuration of titanium, element 22, is ________.

Accepted Answer

A) [Ar]3s23p6 
B) [Ne]3s4 
C) [Ar]3s43p4 
D) [Ar]3d24s2 
E) [Ne]3s43p2 
A) [Ar]3s23p6 
B) [Ne]3s4 
C) [Ar]3s43p4 
D) [Ar]3d24s2 
E) [Ne]3s43p2

Question 5

Each d-subshell can accommodate a maximum of ________ electrons.

Accepted Answer

A) 6 
B) 2 
C) 10 
D) 3 
E) 5 
A) 6 
B) 2 
C) 10 
D) 3 
E) 5

Question 6

Which one of the quantum numbers does not result from the solution of the Schrodinger equation?

Accepted Answer

A) principal 
B) azimuthal 
C) magnetic 
D) spin 
E) angular momentum 
A) principal 
B) azimuthal 
C) magnetic 
D) spin 
E) angular momentum

Question 7

Elements in group ________ have an np5 electron configuration in the outer shell.

Accepted Answer

Question 8

Which quantum numbers must be the same for the orbitals that they designate to be degenerate in a one-electron system (such as hydrogen)?

Accepted Answer

A) n, l, and ml 
B) n and l only 
C) l and ml 
D) ml only 
E) n only 
A) n, l, and ml 
B) n and l only 
C) l and ml 
D) ml only 
E) n only

Question 9

All of the orbitals in a given electron shell have the same value as the ________ quantum number.

Accepted Answer

A) principal 
B) angular momentum 
C) magnetic 
D) spin 
E) psi 
A) principal 
B) angular momentum 
C) magnetic 
D) spin 
E) psi

Question 10

The element that has a valence configuration of 2s2 is ________.

Accepted Answer

A) Be 
B) Mg 
C) Ca 
D) Sr 
E) Ba 
A) Be 
B) Mg 
C) Ca 
D) Sr 
E) Ba

Question 11

The energy (J)required for an electronic transition in a Bohr hydrogen atom from n = 2 to n = 3 is ________ J.

Accepted Answer

A) 4.00 × 10-19 
B) 3.00 × 10-19 
C) -3.00 × 10-19 
D) -7.90 × 10-19 
E) 4.60 × 1014 
A) 4.00 × 10-19 
B) 3.00 × 10-19 
C) -3.00 × 10-19 
D) -7.90 × 10-19 
E) 4.60 × 1014

Question 12

The ________ orbital is degenerate with 5py in a many-electron atom.

Accepted Answer

A) 5s 
B) 5px 
C) 4py 
D) 5dxy 
E) 5d2 
A) 5s 
B) 5px 
C) 4py 
D) 5dxy 
E) 5d2

Question 13

The ground-state electron configuration of the element ________ is [Kr]5s14d5.

Accepted Answer

A) Nb 
B) Mo 
C) Cr 
D) Mn 
E) Tc 
A) Nb 
B) Mo 
C) Cr 
D) Mn 
E) Tc

Question 14

The element that has a valence configuration of 2s1 is ________.

Accepted Answer

A) Li 
B) Na 
C) K 
D) Rb 
E) Cs 
A) Li 
B) Na 
C) K 
D) Rb 
E) Cs

Question 15

What is the wavelength of light (nm)that has a frequency of 3.22 × 1014 s-1?

Accepted Answer

A) 932 nm 
B) 649 nm 
C) 9.66 × 1022 nm 
D) 9.32 × 10-7 nm 
E) 1.07 × 106 nm 
A) 932 nm 
B) 649 nm 
C) 9.66 × 1022 nm 
D) 9.32 × 10-7 nm 
E) 1.07 × 106 nm

Question 16

The complete electron configuration of sulfur, element 16, is ________.

Accepted Answer

A) 1s22s22p63s23p4  
B) 1s22s22p103s2  
C) 1s42s42p63s2 
D) 1s42s42p8  
E) 1s62s62p23s2  
A) 1s22s22p63s23p4  
B) 1s22s22p103s2  
C) 1s42s42p63s2 
D) 1s42s42p8  
E) 1s62s62p23s2

Question 17

All of the subshells in a given shell have the same energy in the hydrogen atom. In a many-electron atom, the subshells in a given shell do not have the same energy. Why?

Accepted Answer

Hydrogen atoms have only one electron. T

Question 18

The ground-state electron configuration of ________ is [Ar]4s13d5.

Accepted Answer

A) V 
B) Mn 
C) Fe 
D) Cr 
E) K 
A) V 
B) Mn 
C) Fe 
D) Cr 
E) K

Question 19

The total number of orbitals in a shell is given by ________.

Accepted Answer

A) I2 
B) n2 
C) 2n 
D) 2n + 1 
E) 2l + 1 
A) I2 
B) n2 
C) 2n 
D) 2n + 1 
E) 2l + 1

Question 20

There are ________ orbitals in the third shell.

Accepted Answer

A) 25 
B) 4 
C) 9 
D) 16 
E) 1 
A) 25 
B) 4 
C) 9 
D) 16 
E) 1

Exam 6: Electronic Structure of Atoms

In a hydrogen atom, an electron in a ________ orbital can absorb a photon, but cannot emit a photon.

The wavelength of light emitted from a traffic light having a frequency of 2.74 × 1014 Hz is ________ nm.

The electron density of the 2s orbital is asymmetric.

The condensed electron configuration of titanium, element 22, is ________.

Each d-subshell can accommodate a maximum of ________ electrons.

Which one of the quantum numbers does not result from the solution of the Schrodinger equation?

Elements in group ________ have an np5 electron configuration in the outer shell.

Which quantum numbers must be the same for the orbitals that they designate to be degenerate in a one-electron system (such as hydrogen)?

All of the orbitals in a given electron shell have the same value as the ________ quantum number.

The element that has a valence configuration of 2s2 is ________.

The energy (J)required for an electronic transition in a Bohr hydrogen atom from n = 2 to n = 3 is ________ J.

The ________ orbital is degenerate with 5py in a many-electron atom.

The ground-state electron configuration of the element ________ is [Kr]5s14d5.

The element that has a valence configuration of 2s1 is ________.

What is the wavelength of light (nm)that has a frequency of 3.22 × 1014 s-1?

The complete electron configuration of sulfur, element 16, is ________.

All of the subshells in a given shell have the same energy in the hydrogen atom. In a many-electron atom, the subshells in a given shell do not have the same energy. Why?

The ground-state electron configuration of ________ is [Ar]4s13d5.

The total number of orbitals in a shell is given by ________.

There are ________ orbitals in the third shell.

Introduction: Matter and Measurement

Atoms, Molecules, and Ions

Stoichiometry: Calculations With Chemical Formulas and Equations

Aqueous Reactions and Solution Stoichiometry

Thermochemistry

Periodic Properties of the Elements

Basic Concepts of Chemical Bonding

Molecular Geometry and Bonding Theories

Gases

Liquids and Intermolecular Forces

Solids and Modern Materials

Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acid-Base Equilibria

Additional Aspects of Aqueous Equilibria

Chemistry of the Environment

Chemical Thermodynamics

Electrochemistry

Nuclear Chemistry

Chemistry of the Nonmetals

Transition Metals and Coordination Chemistry

The Chemistry of Life: Organic and Biological Chemistry

Filters

The wavelength of light emitted from a traffic light having a frequency of 2.74 × 10¹⁴ Hz is ________ nm.

Elements in group ________ have an np⁵ electron configuration in the outer shell.

The element that has a valence configuration of 2s² is ________.

The ________ orbital is degenerate with 5p_yin a many-electron atom.

The ground-state electron configuration of the element ________ is [Kr]5s¹4d⁵.

The element that has a valence configuration of 2s¹ is ________.

What is the wavelength of light (nm)that has a frequency of 3.22 × 10¹⁴ s^-1?

The ground-state electron configuration of ________ is [Ar]4s¹3d⁵.