Question 1

The energy of a quantum of radiation in a vacuum that has a wavelength of 447 nm is approximately

Accepted Answer

A)  2.37 * 10-19 J 
B)  1.60 * 10-19 J 
C)  9.88 *10-33 J 
D)  9.11 *10-31 J 
E)  None of these is correct. 
A)  2.37 * 10-19 J 
B)  1.60 * 10-19 J 
C)  9.88 *10-33 J 
D)  9.11 *10-31 J 
E)  None of these is correct.

Question 2

What is the magnitude of the change in potential energy for the electron in the hydrogen atom as it moves from the n = 2 to n = 3 orbit? (The radius of the 1st Bohr orbit is 0.0529 nm.)

Accepted Answer

A)  1.89 eV 
B)  4.91 eV 
C)  0.945 eV 
D)  3.78 eV 
E)  None of these is correct. 
A)  1.89 eV 
B)  4.91 eV 
C)  0.945 eV 
D)  3.78 eV 
E)  None of these is correct.

Question 3

What is the energy difference between the transition with the longest wavelength and the transition with the shortest wavelength in the Balmer series?

Accepted Answer

A)  10.2 eV 
B)  3.4 eV 
C)  1.51 eV 
D)  12.1 eV 
E)  0.66 eV 
A)  10.2 eV 
B)  3.4 eV 
C)  1.51 eV 
D)  12.1 eV 
E)  0.66 eV

Question 4

The wavelength of the visible line in the hydrogen spectrum that corresponds to m = 4 in the Balmer equation is

Accepted Answer

A)  656 nm 
B)  486 nm 
C)  434 nm 
D)  410 nm 
E)  None of these is correct. 
A)  656 nm 
B)  486 nm 
C)  434 nm 
D)  410 nm 
E)  None of these is correct.

Question 5

The critical experiments that established the nuclear nature of atoms were performed by

Accepted Answer

A)  Bohr 
B)  Balmer 
C)  Rydberg and Ritz 
D)  Geiger and Marsden 
E)  Thomson 
A)  Bohr 
B)  Balmer 
C)  Rydberg and Ritz 
D)  Geiger and Marsden 
E)  Thomson

Question 6

An electron in a hydrogen atom jumps from the n = 5 to n = 3 level. Is a photon absorbed or emitted in this process? What is the wavelength of the photon? State whether the photon is in the visible, ultraviolet, or infrared range of the electro-magnetic spectrum.

Accepted Answer

A)  absorbed, 1280 nm, infrared 
B)  emitted, 605 nm, visible 
C)  emitted, 1280 nm, infrared 
D)  absorbed, 605 nm, visible 
E)  emitted, 605 nm, infrared 
A)  absorbed, 1280 nm, infrared 
B)  emitted, 605 nm, visible 
C)  emitted, 1280 nm, infrared 
D)  absorbed, 605 nm, visible 
E)  emitted, 605 nm, infrared

Question 7

What is the wavelength of the most energetic X rays emitted from an X-ray tube operated at 40 kV?

Accepted Answer

A)  0.031 nm 
B)  31 nm 
C)  1.7 µm 
D)  25 µm 
E)  0.75 nm 
A)  0.031 nm 
B)  31 nm 
C)  1.7 µm 
D)  25 µm 
E)  0.75 nm

Question 8

The constant in the Rydberg-Ritz formula is RH = 10.96776 µm-1. The wavelength predicted by this formula for n1 = 5 and n2 = 3 is

Accepted Answer

A)  656 nm 
B)  486 nm 
C)  434 nm 
D)  410 nm 
E)  None of these is correct. 
A)  656 nm 
B)  486 nm 
C)  434 nm 
D)  410 nm 
E)  None of these is correct.

Question 9

According to the Bohr theory, the allowed energy states for the hydrogen atom are given by the relation   .
This formula can be readily extended to other hydrogenic (one-electron) systems. The energy of the second level (n = 2) for the doubly ionized lithium atom is

Accepted Answer

A)  -54.4 eV 
B)  13.6 eV 
C)  -30.6 eV 
D)  -3.4 eV 
E)  -1.5 eV 
A)  -54.4 eV 
B)  13.6 eV 
C)  -30.6 eV 
D)  -3.4 eV 
E)  -1.5 eV

Question 10

If the angular momentum is characterized by the quantum number   = 3, what is the largest possible angle between   and the +z axis?

Accepted Answer

A)  30.0º 
B)  60.8º 
C)  81.4º 
D)  150º 
E)  163º 
A)  30.0º 
B)  60.8º 
C)  81.4º 
D)  150º 
E)  163º

Question 11

The wavelength of the visible line in the hydrogen spectrum that corresponds to m = 5 in the Balmer equation is

Accepted Answer

A)  656 nm 
B)  486 nm 
C)  434 nm 
D)  410 nm 
E)  None of these is correct. 
A)  656 nm 
B)  486 nm 
C)  434 nm 
D)  410 nm 
E)  None of these is correct.

Question 12

According to the Bohr theory, a hydrogen atom

Accepted Answer

A)  does not radiate when it is in a stationary state. 
B)  radiates when the electron accelerates in a circular orbit. 
C)  remains in the ground state until it gives off a photon. 
D)  gives off a continuous spectrum from the K-shell. 
E)  has an electron in the ground state, an electron in the n = 1 state, an electron in the
N = 2 state, and so on. 
A)  does not radiate when it is in a stationary state. 
B)  radiates when the electron accelerates in a circular orbit. 
C)  remains in the ground state until it gives off a photon. 
D)  gives off a continuous spectrum from the K-shell. 
E)  has an electron in the ground state, an electron in the n = 1 state, an electron in the
N = 2 state, and so on.

Question 13

The symbol that represents the orbital angular momentum is

Accepted Answer

A)  n 
B)  m 
C)  L 
D)    
E)  z 
A)  n 
B)  m 
C)  L 
D)    
E)  z

Question 14

The order-of-magnitude of the diameter of the nucleus is closest to

Accepted Answer

A)  10-6 m 
B)  10-8 m 
C)  10-10 m 
D)  10-12 m 
E)  10-15 m 
A)  10-6 m 
B)  10-8 m 
C)  10-10 m 
D)  10-12 m 
E)  10-15 m

Question 15

For the principal quantum number n = 4, the number of values the magnetic quantum number m can have is

Accepted Answer

A)  4 
B)  3 
C)  7 
D)  16 
E)  6 
A)  4 
B)  3 
C)  7 
D)  16 
E)  6

Question 16

The principle quantum number of an electron is 3. The possible magnitudes of the orbital angular momentum, L, are

Accepted Answer

A)    
B)    
C)    
D)    
E)  None of these is correct. 
A)    
B)    
C)    
D)    
E)  None of these is correct.

Question 17

Use the following figure for the next two problems.  
-The energy of a hydrogen atom in the n = 5 state is approximately

Accepted Answer

A)  -68 eV 
B)  -0.54 eV 
C)  +68 eV 
D)  +2.7 eV 
E)  +0.54 eV 
A)  -68 eV 
B)  -0.54 eV 
C)  +68 eV 
D)  +2.7 eV 
E)  +0.54 eV

Question 18

The limit (n = $\infty$) of a particular spectral series is the line of

Accepted Answer

A)  highest intensity in the series. 
B)  highest frequency in the visible spectrum. 
C)  lowest frequency in the visible spectrum. 
D)  lowest frequency possible in the series. 
E)  highest frequency possible in the series. 
A)  highest intensity in the series. 
B)  highest frequency in the visible spectrum. 
C)  lowest frequency in the visible spectrum. 
D)  lowest frequency possible in the series. 
E)  highest frequency possible in the series.

Question 19

The X-ray spectrum of an X-ray tube with a molybdenum target is shown. The K edge (K-electron binding energy) is 0.0617 nm. The lowest voltage that could produce the spectrum shown is

Accepted Answer

A)  10 kV 
B)  20 kV 
C)  30 kV 
D)  40 kV 
E)  50 kV 
A)  10 kV 
B)  20 kV 
C)  30 kV 
D)  40 kV 
E)  50 kV

Question 20

For the hydrogen atom in the ground state, the radial probability density is   The probability of finding the electron in the range $\Delta$r = 0.04a0 at r = a0 is

Accepted Answer

A)  0.0423 
B)  0.0164 
C)  0.0217 
D)  0.0137 
E)  0.0241 
A)  0.0423 
B)  0.0164 
C)  0.0217 
D)  0.0137 
E)  0.0241

The energy of a quantum of radiation in a vacuum that has a wavelength of 447 nm is approximately

What is the magnitude of the change in potential energy for the electron in the hydrogen atom as it moves from the n = 2 to n = 3 orbit? (The radius of the 1st Bohr orbit is 0.0529 nm.)

What is the energy difference between the transition with the longest wavelength and the transition with the shortest wavelength in the Balmer series?

The wavelength of the visible line in the hydrogen spectrum that corresponds to m = 4 in the Balmer equation is

The critical experiments that established the nuclear nature of atoms were performed by

An electron in a hydrogen atom jumps from the n = 5 to n = 3 level. Is a photon absorbed or emitted in this process? What is the wavelength of the photon? State whether the photon is in the visible, ultraviolet, or infrared range of the electro-magnetic spectrum.

What is the wavelength of the most energetic X rays emitted from an X-ray tube operated at 40 kV?

The constant in the Rydberg-Ritz formula is R_H = 10.96776 µm^-1. The wavelength predicted by this formula for n₁ = 5 and n₂ = 3 is

According to the Bohr theory, the allowed energy states for the hydrogen atom are given by the relation . This formula can be readily extended to other hydrogenic (one-electron) systems. The energy of the second level (n = 2) for the doubly ionized lithium atom is

If the angular momentum is characterized by the quantum number = 3, what is the largest possible angle between and the +z axis?

The wavelength of the visible line in the hydrogen spectrum that corresponds to m = 5 in the Balmer equation is

According to the Bohr theory, a hydrogen atom

The symbol that represents the orbital angular momentum is

The order-of-magnitude of the diameter of the nucleus is closest to

For the principal quantum number n = 4, the number of values the magnetic quantum number m can have is

The principle quantum number of an electron is 3. The possible magnitudes of the orbital angular momentum, L, are

Use the following figure for the next two problems. -The energy of a hydrogen atom in the n = 5 state is approximately

The limit (n = $\infty$ ) of a particular spectral series is the line of

The X-ray spectrum of an X-ray tube with a molybdenum target is shown. The K edge (K-electron binding energy) is 0.0617 nm. The lowest voltage that could produce the spectrum shown is

The Electric Field I: Discrete Charge Distributions

The Electric Field II: Continuous Charge Distributions

Electric Potential

Capacitance

Electric Current and Direct-Current Circuits

The Magnetic Field

Sources of the Magnetic Field

Magnetic Induction

Alternating-Current Circuits

Maxwells Equations and Electromagnetic Waves

Properties of Light

Optical Images

Interference and Diffraction

Wave Particle Duality and Quantum Physics

Applications of the Schrodinger Equation

Molecules

Solids and the Theory of Conduction

Relativity

Nuclear Physics

Elementary Particles and the Beginning of the Universe

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Exam 16: Atoms

The energy of a quantum of radiation in a vacuum that has a wavelength of 447 nm is approximately

What is the magnitude of the change in potential energy for the electron in the hydrogen atom as it moves from the n = 2 to n = 3 orbit? (The radius of the 1st Bohr orbit is 0.0529 nm.)

What is the energy difference between the transition with the longest wavelength and the transition with the shortest wavelength in the Balmer series?

The wavelength of the visible line in the hydrogen spectrum that corresponds to m = 4 in the Balmer equation is

The critical experiments that established the nuclear nature of atoms were performed by

An electron in a hydrogen atom jumps from the n = 5 to n = 3 level. Is a photon absorbed or emitted in this process? What is the wavelength of the photon? State whether the photon is in the visible, ultraviolet, or infrared range of the electro-magnetic spectrum.

What is the wavelength of the most energetic X rays emitted from an X-ray tube operated at 40 kV?

The constant in the Rydberg-Ritz formula is RH = 10.96776 µm-1. The wavelength predicted by this formula for n1 = 5 and n2 = 3 is

According to the Bohr theory, the allowed energy states for the hydrogen atom are given by the relation . This formula can be readily extended to other hydrogenic (one-electron) systems. The energy of the second level (n = 2) for the doubly ionized lithium atom is

If the angular momentum is characterized by the quantum number = 3, what is the largest possible angle between and the +z axis?

The wavelength of the visible line in the hydrogen spectrum that corresponds to m = 5 in the Balmer equation is

According to the Bohr theory, a hydrogen atom

The symbol that represents the orbital angular momentum is

The order-of-magnitude of the diameter of the nucleus is closest to

For the principal quantum number n = 4, the number of values the magnetic quantum number m can have is

The principle quantum number of an electron is 3. The possible magnitudes of the orbital angular momentum, L, are

Use the following figure for the next two problems. -The energy of a hydrogen atom in the n = 5 state is approximately

The limit (n = ∞\infty∞ ) of a particular spectral series is the line of

The X-ray spectrum of an X-ray tube with a molybdenum target is shown. The K edge (K-electron binding energy) is 0.0617 nm. The lowest voltage that could produce the spectrum shown is

For the hydrogen atom in the ground state, the radial probability density is The probability of finding the electron in the range Δ\DeltaΔ r = 0.04a0 at r = a0 is

The Electric Field I: Discrete Charge Distributions

The Electric Field II: Continuous Charge Distributions

Electric Potential

Capacitance

Electric Current and Direct-Current Circuits

The Magnetic Field

Sources of the Magnetic Field

Magnetic Induction

Alternating-Current Circuits

Maxwells Equations and Electromagnetic Waves

Properties of Light

Optical Images

Interference and Diffraction

Wave Particle Duality and Quantum Physics

Applications of the Schrodinger Equation

Molecules

Solids and the Theory of Conduction

Relativity

Nuclear Physics

Elementary Particles and the Beginning of the Universe

Filters

The constant in the Rydberg-Ritz formula is R_H = 10.96776 µm^-1. The wavelength predicted by this formula for n₁ = 5 and n₂ = 3 is

The limit (n = $\infty$ ) of a particular spectral series is the line of