Question 1

In a plot of probability of finding the electron in the hydrogen ground state versus the distance from the nucleus,the maximum occurs:

Accepted Answer

A)  at a0,the first Bohr radius. 
B)  at slightly less than a0. 
C)  at slightly more than a0. 
D)  at 2 a0. 
A)  at a0,the first Bohr radius. 
B)  at slightly less than a0. 
C)  at slightly more than a0. 
D)  at 2 a0.

Question 2

In the n = 4 shell,how many distinct values of mt are possible?

Accepted Answer

A)  4 
B)  8 
C)  9 
D)  The correct value is not given. 
A)  4 
B)  8 
C)  9 
D)  The correct value is not given.

Question 3

The ionization energy of the hydrogen atom is 13.6 eV.What is the wavelength of a photon having this much energy? (h = 6.63 × 10−34 J⋅s,c = 3.00 × 108 m/s,1 eV = 1.6 × 10−19 J,and 1 nm = 10−9 m)

Accepted Answer

A)  91.4 nm 
B)  136 nm 
C)  273 nm 
D)  360 nm 
A)  91.4 nm 
B)  136 nm 
C)  273 nm 
D)  360 nm

Question 4

A photon is emitted from a hydrogen atom that undergoes a transition from n = 3 to n = 2.Calculate the energy and wavelength of the photon.(The ionization energy of hydrogen is 13.6 eV,and h = 6.63 × 10−34 J⋅s,c = 3.00 × 108 m/s,1 eV = 1.60 × 10−19 J,and 1 nm = 10−9 m)

Accepted Answer

A)  1.9 eV,660 nm 
B)  1.9 eV,1050 nm 
C)  2.3 eV,550 nm 
D)  2.3 eV,660 nm 
E)  ​2.3 eV,1050 nm 
A)  1.9 eV,660 nm 
B)  1.9 eV,1050 nm 
C)  2.3 eV,550 nm 
D)  2.3 eV,660 nm 
E)  ​2.3 eV,1050 nm

Question 5

A ruby laser can deliver an 4.33 J pulse in approximately 50 nanoseconds.The wavelength of the light is 694 nm.At least how many atoms within the ruby rod had to be excited to allow this high-energy laser pulse? (h = 6.63 × 10−34 J⋅s,c = 3.00 × 108 m/s,1 eV = 1.6 × 10−19 J,and 1 nm = 10−9 m)

Accepted Answer

A)  3.5E+18 
B)  3.0E+17 
C)  1.5E+19 
D)  1.5E+21 
E)  ​1.1E+18 
A)  3.5E+18 
B)  3.0E+17 
C)  1.5E+19 
D)  1.5E+21 
E)  ​1.1E+18

Question 6

The Lyman series of hydrogen corresponds to electron transitions from higher levels to n = 1.What is the longest wavelength in that series? (R = 1.097 × 107 m−1 and 1 nm = 10−9 m)

Accepted Answer

A)  91.4 nm 
B)  122 nm 
C)  273 nm 
D)  456 nm 
A)  91.4 nm 
B)  122 nm 
C)  273 nm 
D)  456 nm

Question 7

In an analysis relating Bohr's theory to the de Broglie wavelength of electrons,when an electron moves from the n = 1 level to the n = 2 level,the circumference for its orbit becomes 4 times greater.This occurs because:

Accepted Answer

A)  there are four times as many wavelengths in the new orbit. 
B)  the wavelength of the electron becomes four times as long. 
C)  there are twice as many wavelengths,and each wavelength is twice as long. 
D)  the electron is moving four times as fast. 
A)  there are four times as many wavelengths in the new orbit. 
B)  the wavelength of the electron becomes four times as long. 
C)  there are twice as many wavelengths,and each wavelength is twice as long. 
D)  the electron is moving four times as fast.

Question 8

An energy of 13.6 eV is needed to remove an electron from the n = 3 state of a lithium atom.If a single photon accomplishes this task,what wavelength is needed? (h = 6.63 × 10−34 J⋅s,c = 3.00 × 108 m/s,1 eV = 1.6 × 10−19 J,and 1 nm = 10−9 m)

Accepted Answer

A)  146.3 nm 
B)  30.5 nm 
C)  13.8 nm 
D)  91.4 nm 
E)  ​234 nm 
A)  146.3 nm 
B)  30.5 nm 
C)  13.8 nm 
D)  91.4 nm 
E)  ​234 nm

Question 9

Of the various wavelengths emitted from a hydrogen gas discharge tube,those that are associated with transitions from higher levels down to the n = 1 level produce which of the following?

Accepted Answer

A)  infrared 
B)  visible 
C)  mixture of infrared and visible 
D)  ultraviolet 
A)  infrared 
B)  visible 
C)  mixture of infrared and visible 
D)  ultraviolet

Question 10

A hydrogen atom in the ground state absorbs a 13.32-eV photon.To what level is the electron promoted? (The ionization energy of hydrogen is 13.6-eV).

Accepted Answer

A)  n = 6 
B)  n = 9 
C)  n = 7 
D)  n = 5 
E)  ​n = 11 
A)  n = 6 
B)  n = 9 
C)  n = 7 
D)  n = 5 
E)  ​n = 11

Question 11

If a target element with atomic number Z used in the production of x-rays is replaced by another element for which the atomic number = 5Z,by what factor is the wavelength of the K-alpha x-ray line changed?

Accepted Answer

A)  1/25 
B)  1/5 
C)  1 
D)  5 
E)  ​25 
A)  1/25 
B)  1/5 
C)  1 
D)  5 
E)  ​25

Question 12

What is the energy needed to change an He+ ion into an He++ ion? (The ionization energy of hydrogen is 13.6 eV).

Accepted Answer

A)  13.6 eV 
B)  54.4 eV 
C)  92.9 eV 
D)  112.4 eV 
A)  13.6 eV 
B)  54.4 eV 
C)  92.9 eV 
D)  112.4 eV

Question 13

The quantum mechanical model of the hydrogen atom requires that if the orbital magnetic quantum number is 3,there will be how many permitted spin magnetic quantum numbers?

Accepted Answer

A)  2 
B)  3 
C)  4 
D)  6 
E)  ​7 
A)  2 
B)  3 
C)  4 
D)  6 
E)  ​7

Question 14

The Paschen series of hydrogen corresponds to electron transitions from higher levels to n = 3.What is the shortest wavelength in that series? (R = 1.097 × 107 m−1 and 1 nm = 10−9 m)

Accepted Answer

A)  1875 nm 
B)  820 nm 
C)  1580 nm 
D)  656 nm 
E)  ​1094 nm 
A)  1875 nm 
B)  820 nm 
C)  1580 nm 
D)  656 nm 
E)  ​1094 nm

Question 15

When an electron moves from the n = 1 to the n = 2 orbit:

Accepted Answer

A)  both the radius and the angular momentum double. 
B)  both the radius and the angular momentum increase by a factor of 4. 
C)  the radius doubles and the angular momentum increases by a factor of 4. 
D)  the radius increases by a factor of 4,and the angular momentum doubles. 
A)  both the radius and the angular momentum double. 
B)  both the radius and the angular momentum increase by a factor of 4. 
C)  the radius doubles and the angular momentum increases by a factor of 4. 
D)  the radius increases by a factor of 4,and the angular momentum doubles.

Question 16

According to the Rutherford model of the atom,most of the volume of an atom:

Accepted Answer

A)  is empty space. 
B)  was occupied by the nucleus. 
C)  contained positive charges. 
D)  excluded electrons. 
A)  is empty space. 
B)  was occupied by the nucleus. 
C)  contained positive charges. 
D)  excluded electrons.

Question 17

Characteristic x-rays are the result of:

Accepted Answer

A)  outer electron transitions. 
B)  inner electron transitions. 
C)  nuclear electron states. 
D)  buckytubes. 
A)  outer electron transitions. 
B)  inner electron transitions. 
C)  nuclear electron states. 
D)  buckytubes.

Question 18

Of the various wavelengths emitted from a hydrogen gas discharge tube,those associated with transitions from higher levels down to the n = 2 level produce which of the following?

Accepted Answer

A)  infrared 
B)  visible 
C)  mixture of visible and ultraviolet 
D)  ultraviolet 
A)  infrared 
B)  visible 
C)  mixture of visible and ultraviolet 
D)  ultraviolet

Question 19

Using quantum theories to study the hydrogen atom allows the prediction and experimental verification of many data about atoms such as He+ and Li2+.Some quantities that can successfully be predicted about He+ and Li2+ in this manner are:

Accepted Answer

A)  the color of the light they will emit. 
B)  their mass. 
C)  their abundance in nature. 
D)  All of the above. 
A)  the color of the light they will emit. 
B)  their mass. 
C)  their abundance in nature. 
D)  All of the above.

Question 20

The ionization energy of the hydrogen atom is 13.6 eV.What is the energy of a photon emitted corresponding to a transition from the n = 5 to n = 3 state?

Accepted Answer

A)  0.97 eV 
B)  1.81 eV 
C)  3.40 eV 
D)  6.80 eV 
E)  ​0.24 eV 
A)  0.97 eV 
B)  1.81 eV 
C)  3.40 eV 
D)  6.80 eV 
E)  ​0.24 eV

Exam 28: Atomic Physics

In a plot of probability of finding the electron in the hydrogen ground state versus the distance from the nucleus,the maximum occurs:

In the n = 4 shell,how many distinct values of mt are possible?

The ionization energy of the hydrogen atom is 13.6 eV.What is the wavelength of a photon having this much energy? (h = 6.63 × 10−34 J⋅s,c = 3.00 × 108 m/s,1 eV = 1.6 × 10−19 J,and 1 nm = 10−9 m)

A photon is emitted from a hydrogen atom that undergoes a transition from n = 3 to n = 2.Calculate the energy and wavelength of the photon.(The ionization energy of hydrogen is 13.6 eV,and h = 6.63 × 10−34 J⋅s,c = 3.00 × 108 m/s,1 eV = 1.60 × 10−19 J,and 1 nm = 10−9 m)

The Lyman series of hydrogen corresponds to electron transitions from higher levels to n = 1.What is the longest wavelength in that series? (R = 1.097 × 107 m−1 and 1 nm = 10−9 m)

In an analysis relating Bohr's theory to the de Broglie wavelength of electrons,when an electron moves from the n = 1 level to the n = 2 level,the circumference for its orbit becomes 4 times greater.This occurs because:

An energy of 13.6 eV is needed to remove an electron from the n = 3 state of a lithium atom.If a single photon accomplishes this task,what wavelength is needed? (h = 6.63 × 10−34 J⋅s,c = 3.00 × 108 m/s,1 eV = 1.6 × 10−19 J,and 1 nm = 10−9 m)

Of the various wavelengths emitted from a hydrogen gas discharge tube,those that are associated with transitions from higher levels down to the n = 1 level produce which of the following?

A hydrogen atom in the ground state absorbs a 13.32-eV photon.To what level is the electron promoted? (The ionization energy of hydrogen is 13.6-eV).

If a target element with atomic number Z used in the production of x-rays is replaced by another element for which the atomic number = 5Z,by what factor is the wavelength of the K-alpha x-ray line changed?

What is the energy needed to change an He+ ion into an He++ ion? (The ionization energy of hydrogen is 13.6 eV).

The quantum mechanical model of the hydrogen atom requires that if the orbital magnetic quantum number is 3,there will be how many permitted spin magnetic quantum numbers?

The Paschen series of hydrogen corresponds to electron transitions from higher levels to n = 3.What is the shortest wavelength in that series? (R = 1.097 × 107 m−1 and 1 nm = 10−9 m)

When an electron moves from the n = 1 to the n = 2 orbit:

According to the Rutherford model of the atom,most of the volume of an atom:

Characteristic x-rays are the result of:

Of the various wavelengths emitted from a hydrogen gas discharge tube,those associated with transitions from higher levels down to the n = 2 level produce which of the following?

Using quantum theories to study the hydrogen atom allows the prediction and experimental verification of many data about atoms such as He+ and Li2+.Some quantities that can successfully be predicted about He+ and Li2+ in this manner are:

The ionization energy of the hydrogen atom is 13.6 eV.What is the energy of a photon emitted corresponding to a transition from the n = 5 to n = 3 state?

Introduction

Introduction: Part A

Motion in One Dimension

Motion in One Dimension: Part A

Vectors and Two-Dimensional Motion

Vectors and Two-Dimensional Motion: Part A

The Laws of Motion

The Laws of Motion: Part A

Energy

Energy: Part A

Momentum and Collisions

Momentum and Collisions: Part A

Rotational Motion and the Law of Gravity

Rotational Motion and the Law of Gravity: Part A

Rotational Equilibrium and Rotational Dynamics

Rotational Equilibrium and Rotational Dynamics: Part A

Solids and Fluids

Solids and Fluids: Part A

Thermal Physics

Thermal Physics: Part A

Energy in Thermal Processes Heat and Internal Energy

Energy in Thermal Processes Heat and Internal Energy: Part A

The Laws of Thermodynamics Work in Thermodynamic Processes

The Laws of Thermodynamics Work in Thermodynamic Processes: Part A

Vibrations and Waves

Vibrations and Waves: Part A

Sound

Sound: Part A

Electric Forces and Electric Fields

Electric Forces and Electric Fields: Part A

Electrical Energy and Capacitance

Electrical Energy and Capacitance: Part A

Current and Resistance Electric Current

Current and Resistance Electric Current: Part A

Direct-Current Circuits Sources of EMF

Direct-Current Circuits Sources of EMF: Part A

Magnetism Magnets

Magnetism Magnets: Part A

Induced Voltages and Inductance

Induced Voltages and Inductance: Part A

Alternating-Current Circuits and Electromagnetic Waves

Alternating-Current Circuits and Electromagnetic Waves: Part A

Reflection and Refraction of Light

Reflection and Refraction of Light: Part A

Mirrors and Lenses

Mirrors and Lenses: Part A

Wave Optics

Wave Optics: Part A

Optical Instruments

Optical Instruments: Part A

Relativity

Relativity: Part A

Quantum Physics Blackbody Radiation and Plancks Hypothesis

Quantum Physics Blackbody Radiation and Plancks Hypothesis: Part A

Atomic Physics: Part A

Nuclear Physics

Nuclear Physics: Part A

Nuclear Energy and Elementary Particles

Nuclear Energy and Elementary Particles: Part A

Particle Collisions, Mediating Photons, and Quark Structures: Exploring the Fundamentals of Physics

In the n = 4 shell,how many distinct values of m_t are possible?

The ionization energy of the hydrogen atom is 13.6 eV.What is the wavelength of a photon having this much energy? (h = 6.63 × 10−³⁴ J⋅s,c = 3.00 × 10⁸ m/s,1 eV = 1.6 × 10−¹⁹ J,and 1 nm = 10−⁹ m)

A photon is emitted from a hydrogen atom that undergoes a transition from n = 3 to n = 2.Calculate the energy and wavelength of the photon.(The ionization energy of hydrogen is 13.6 eV,and h = 6.63 × 10−³⁴ J⋅s,c = 3.00 × 10⁸ m/s,1 eV = 1.60 × 10−¹⁹ J,and 1 nm = 10−⁹ m)

The Lyman series of hydrogen corresponds to electron transitions from higher levels to n = 1.What is the longest wavelength in that series? (R = 1.097 × 10⁷ m−¹ and 1 nm = 10−⁹ m)

An energy of 13.6 eV is needed to remove an electron from the n = 3 state of a lithium atom.If a single photon accomplishes this task,what wavelength is needed? (h = 6.63 × 10−³⁴ J⋅s,c = 3.00 × 10⁸ m/s,1 eV = 1.6 × 10−¹⁹ J,and 1 nm = 10−⁹ m)

What is the energy needed to change an He⁺ ion into an He⁺⁺ ion? (The ionization energy of hydrogen is 13.6 eV).

The Paschen series of hydrogen corresponds to electron transitions from higher levels to n = 3.What is the shortest wavelength in that series? (R = 1.097 × 10⁷ m−¹ and 1 nm = 10−⁹ m)

Using quantum theories to study the hydrogen atom allows the prediction and experimental verification of many data about atoms such as He⁺ and Li²⁺.Some quantities that can successfully be predicted about He⁺ and Li²⁺ in this manner are: