Question 1

What is the energy in joules of a mole of photons with the energy of the 656 nm spectral line of hydrogen?

Accepted Answer

A)  2.62 × 10-7 J 
B)  78.3 J 
C)  3.03 J 
D)  8.73 × 10-25 J 
E)  1.82 × 105 J 
A)  2.62 × 10-7 J 
B)  78.3 J 
C)  3.03 J 
D)  8.73 × 10-25 J 
E)  1.82 × 105 J

Question 2

What is the wavelength, in nm, associated with a 2000. kg truck traveling at a speed of 20 m/s, that is, considering the truck to be a "matter" wave?

Accepted Answer

A)  1.33 × 10-29 nm 
B)  2.65 × 10-29 nm 
C)  6.02 × 10-29 nm 
D)  7.50 × 103 nm 
E)  1.66 × 10-29 nm 
A)  1.33 × 10-29 nm 
B)  2.65 × 10-29 nm 
C)  6.02 × 10-29 nm 
D)  7.50 × 103 nm 
E)  1.66 × 10-29 nm

Question 3

Use the Balmer equation to determine n for the spectral line of wavelength 434 nm. The constant for Balmer's equation is 3.2881 × 1015 s-1.

Accepted Answer

A)  3 
B)  4 
C)  5 
D)  6 
E)  7 
A)  3 
B)  4 
C)  5 
D)  6 
E)  7

Question 4

How many unpaired electrons are in the ground state electron configuration of chromium?

Accepted Answer

A)  5 
B)  6 
C)  4 
D)  2 
E)  0 
A)  5 
B)  6 
C)  4 
D)  2 
E)  0

Question 5

Give the appropriate values of n and ℓ for the orbital designation 3s.

Accepted Answer

A)  n = 3, ℓ = 1 
B)  n = 0, ℓ = 3 
C)  n = 3, ℓ = 3 
D)  n = 3, ℓ = 2 
E)  n = 3, ℓ = 0 
A)  n = 3, ℓ = 1 
B)  n = 0, ℓ = 3 
C)  n = 3, ℓ = 3 
D)  n = 3, ℓ = 2 
E)  n = 3, ℓ = 0

Question 6

What is the wavelength, in nm, of light with an energy content of 550 kJ/mol?

Accepted Answer

A)  0.218 nm 
B)  0.419 nm 
C)  157 nm 
D)  218 nm 
E)  6579 nm 
A)  0.218 nm 
B)  0.419 nm 
C)  157 nm 
D)  218 nm 
E)  6579 nm

Question 7

Light passing through a transparent medium has a wavelength of 466 nm and a frequency of 6.20 × 1014 s-1. What is the speed of the light in the medium?

Accepted Answer

A)  2.89 × 108 m/s 
B)  2.89 × 1017 m/s 
C)  1.33 × 1012 m/s 
D)  1.33 × 1021 m/s 
E)  7.52 × 10-22 m/s 
A)  2.89 × 108 m/s 
B)  2.89 × 1017 m/s 
C)  1.33 × 1012 m/s 
D)  1.33 × 1021 m/s 
E)  7.52 × 10-22 m/s

Question 8

The quantum numbers of the last electron of arsenic could be:

Accepted Answer

A)  n = 4, ℓ = 2, mℓ = 1, ms = 1/2 
B)  n = 4, ℓ = 1, mℓ = 1, ms = 1/2 
C)  n = 3, ℓ = 1, mℓ = 1, ms = 1/2 
D)  n = 4, ℓ = 3, mℓ = 1, ms = 1/2 
E)  n = 4, ℓ = 1, mℓ = 1/2, ms = 0 
A)  n = 4, ℓ = 2, mℓ = 1, ms = 1/2 
B)  n = 4, ℓ = 1, mℓ = 1, ms = 1/2 
C)  n = 3, ℓ = 1, mℓ = 1, ms = 1/2 
D)  n = 4, ℓ = 3, mℓ = 1, ms = 1/2 
E)  n = 4, ℓ = 1, mℓ = 1/2, ms = 0

Question 9

Which one of the following set of quantum numbers would not be allowed?

Accepted Answer

A)  n = 3, ℓ = 2, mℓ = 1 
B)  n = 3, ℓ = 0, mℓ = 0 
C)  n = 3, ℓ = 3, mℓ = 1 
D)  n = 3, ℓ = 2, mℓ = -1 
E)  n = 3, ℓ = 1, mℓ = -1 
A)  n = 3, ℓ = 2, mℓ = 1 
B)  n = 3, ℓ = 0, mℓ = 0 
C)  n = 3, ℓ = 3, mℓ = 1 
D)  n = 3, ℓ = 2, mℓ = -1 
E)  n = 3, ℓ = 1, mℓ = -1

Question 10

A radiation detector exposed to sunlight records the energy falling on a given area each unit time. If such a detector has a reading of 0.430 cal cm-2 min-1, how many photons of sunlight are striking each cm2 in one minute? Assume the average wavelength of sunlight is 460. nm. (4.184 J = 1 calorie)

Accepted Answer

A)  2.02 × 107 photons 
B)  8.46 × 107 photons 
C)  4.17 × 1018 photons 
D)  1.02 × 1027 photons 
E)  4.25 × 1027 photons 
A)  2.02 × 107 photons 
B)  8.46 × 107 photons 
C)  4.17 × 1018 photons 
D)  1.02 × 1027 photons 
E)  4.25 × 1027 photons

Question 11

Which of the following orbitals have lobes aligned along the x axis?

Accepted Answer

A)  dxy 
B)  dx2-y2 
C)  dxz 
D)  dyz 
E)  s 
A)  dxy 
B)  dx2-y2 
C)  dxz 
D)  dyz 
E)  s

Question 12

When an electron in an atom goes from a high energy state to a low one, light is given off.

Accepted Answer

A) True 
 B)False

Question 13

The quantum numbers of the last electron of nickel could be:

Accepted Answer

A)  n = 3, ℓ = 2, mℓ = 0, ms = 1/2 
B)  n = 4, ℓ = 2, mℓ = 0, ms = 1/2 
C)  n = 3, ℓ = 1, mℓ = 0, ms = 1/2 
D)  n = 3, ℓ = 2, mℓ = 0, ms = 0 
E)  n = 3, ℓ = 2, mℓ = 1/2, ms = 1/2 
A)  n = 3, ℓ = 2, mℓ = 0, ms = 1/2 
B)  n = 4, ℓ = 2, mℓ = 0, ms = 1/2 
C)  n = 3, ℓ = 1, mℓ = 0, ms = 1/2 
D)  n = 3, ℓ = 2, mℓ = 0, ms = 0 
E)  n = 3, ℓ = 2, mℓ = 1/2, ms = 1/2

Question 14

The relationship between the frequency of light and the energy of the light was postulated by:

Accepted Answer

A)  Max Planck 
B)  Johann Balmer 
C)  Johannes Rydberg 
D)  Albert Einstein 
E)  Robert Bunsen 
A)  Max Planck 
B)  Johann Balmer 
C)  Johannes Rydberg 
D)  Albert Einstein 
E)  Robert Bunsen

Question 15

The ground state electron configuration of phosphorus is ________.

Accepted Answer

A)  1s22s22p43p63d1 
B)  [Ar] 3s23p3 
C)  1s22s22p63s23p3 
D)  1s22s22p63s43p1 
E)  1s22s22p63s22d3 
A)  1s22s22p43p63d1 
B)  [Ar] 3s23p3 
C)  1s22s22p63s23p3 
D)  1s22s22p63s43p1 
E)  1s22s22p63s22d3

Question 16

What is the wavelength of the line in the Balmer series of hydrogen corresponding to the transition from n = 5 to n = 2? The constant for Balmer's equation is 3.2881 × 1015 s-1.

Accepted Answer

A)  304 nm 
B)  30.4 nm 
C)  329 nm 
D)  535 nm 
E)  434 nm 
A)  304 nm 
B)  30.4 nm 
C)  329 nm 
D)  535 nm 
E)  434 nm

Question 17

What is an acceptable value for the missing quantum number? n = 4, ℓ = 2, mℓ = 0, ms = ?

Accepted Answer

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

Question 18

Frequency and wavelength are related by the equation:

Accepted Answer

A)  λ = c ∙ v 
B)  λ = c/v 
C)  v = λ/c 
D)  λ = v/c 
E)  c = λ/v 
A)  λ = c ∙ v 
B)  λ = c/v 
C)  v = λ/c 
D)  λ = v/c 
E)  c = λ/v

Question 19

The possible values of the magnetic quantum number, mℓ , of a 3p electron are:

Accepted Answer

A)  0, 1, 2 
B)  2, 1, 0, -1, -2 
C)  0 
D)  -1, 0, +1 
E)  +1, -1 
A)  0, 1, 2 
B)  2, 1, 0, -1, -2 
C)  0 
D)  -1, 0, +1 
E)  +1, -1

Question 20

The existence of discrete (quantized) energy levels in an atom may be inferred from:

Accepted Answer

A)  diffraction of electrons by crystals 
B)  X-ray diffraction by crystals 
C)  atomic line spectra 
D)  experiments on the photoelectric effect 
E)  visible spectrum 
A)  diffraction of electrons by crystals 
B)  X-ray diffraction by crystals 
C)  atomic line spectra 
D)  experiments on the photoelectric effect 
E)  visible spectrum

Exam 8: Electrons in Atoms

What is the energy in joules of a mole of photons with the energy of the 656 nm spectral line of hydrogen?

What is the wavelength, in nm, associated with a 2000. kg truck traveling at a speed of 20 m/s, that is, considering the truck to be a "matter" wave?

Use the Balmer equation to determine n for the spectral line of wavelength 434 nm. The constant for Balmer's equation is 3.2881 × 1015 s-1.

How many unpaired electrons are in the ground state electron configuration of chromium?

Give the appropriate values of n and ℓ for the orbital designation 3s.

What is the wavelength, in nm, of light with an energy content of 550 kJ/mol?

Light passing through a transparent medium has a wavelength of 466 nm and a frequency of 6.20 × 1014 s-1. What is the speed of the light in the medium?

The quantum numbers of the last electron of arsenic could be:

Which one of the following set of quantum numbers would not be allowed?

A radiation detector exposed to sunlight records the energy falling on a given area each unit time. If such a detector has a reading of 0.430 cal cm-2 min-1, how many photons of sunlight are striking each cm2 in one minute? Assume the average wavelength of sunlight is 460. nm. (4.184 J = 1 calorie)

Which of the following orbitals have lobes aligned along the x axis?

When an electron in an atom goes from a high energy state to a low one, light is given off.

The quantum numbers of the last electron of nickel could be:

The relationship between the frequency of light and the energy of the light was postulated by:

The ground state electron configuration of phosphorus is ________.

What is the wavelength of the line in the Balmer series of hydrogen corresponding to the transition from n = 5 to n = 2? The constant for Balmer's equation is 3.2881 × 1015 s-1.

What is an acceptable value for the missing quantum number? n = 4, ℓ = 2, mℓ = 0, ms = ?

Frequency and wavelength are related by the equation:

The possible values of the magnetic quantum number, mℓ , of a 3p electron are:

The existence of discrete (quantized) energy levels in an atom may be inferred from:

Matter - Its Properties and Measurement

Atoms and the Atomic Theory

Chemical Compounds

Chemical Reactions

Introduction to Reactions in Aqueous Solutions

Gases

Thermochemistry

The Periodic Table and Some Atomic Properties

Chemical Bonding I: Basic Concepts

Chemical Bonding II: Additional Aspects

Intermolecular Forces: Liquids and Solids

Solutions and Their Physical Properties

Chemical Kinetics

Principles of Chemical Equilibrium

Acids and Bases

Additional Aspects of Acid-Base Equilibria

Solubility and Complex-Ion Equilibria

Spontaneous Change: Entropy and Free Energy

Electrochemistry

Main Group Elements I: Groups 1, 2, 13, and 14

Main Group Elements II: Groups 18, 17, 16, 15, and Hydrogen

The Transition Elements

Complex Ions and Coordination Compounds

Nuclear Chemistry 1-41

Structures of Organic Compounds

Reactions of Organic Compounds

Chemistry of the Living State

Filters

Use the Balmer equation to determine n for the spectral line of wavelength 434 nm. The constant for Balmer's equation is 3.2881 × 10¹⁵ s-1.

Light passing through a transparent medium has a wavelength of 466 nm and a frequency of 6.20 × 10¹⁴ s-1. What is the speed of the light in the medium?

What is the wavelength of the line in the Balmer series of hydrogen corresponding to the transition from n = 5 to n = 2? The constant for Balmer's equation is 3.2881 × 10¹⁵ s-1.