Question 1

According to Bohr's model, the radius of an electron at n = 4 is

Accepted Answer

A)  0.212 nm 
B)  0.846 nm 
C)  0.0265 nm 
D)  0.00331 nm 
E)  None of these is correct. 
A)  0.212 nm 
B)  0.846 nm 
C)  0.0265 nm 
D)  0.00331 nm 
E)  None of these is correct.

Question 2

The p state of an electronic configuration corresponds to

Accepted Answer

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

Question 3

The energy of the nth level in a one-electron atom is En = -13.6(Z2/n2) eV. Consider a beryllium ion with all but one of its electrons removed (a beryllium atom normally has four electrons). What is the energy of the electron when it is in the third-lowest energy state?

Accepted Answer

A)  -24 eV 
B)  -7.6 eV 
C)  -1.5 eV 
D)  24 eV 
E)  7.6 eV 
A)  -24 eV 
B)  -7.6 eV 
C)  -1.5 eV 
D)  24 eV 
E)  7.6 eV

Question 4

A hydrogen atom is in a state with principal quantum number n = 3. A possible value for its orbital angular momentum is

Accepted Answer

A)  zero 
B)    
C)    
D)    
E)    
A)  zero 
B)    
C)    
D)    
E)

Question 5

In the Bohr Model of the hydrogen atom, what is the kinetic energy of the electron in the n = 3 orbit? (The radius of the 1st Bohr orbit is 0.0529 nm.)

Accepted Answer

A)  3.44 eV 
B)  1.51 eV 
C)  3.02 eV 
D)  0.75 eV 
E)  4.53 eV 
A)  3.44 eV 
B)  1.51 eV 
C)  3.02 eV 
D)  0.75 eV 
E)  4.53 eV

Question 6

The energy of a photon of visible light is on the order of

Accepted Answer

A)  10-6 eV 
B)  10-3 eV 
C)  1 eV 
D)  103 eV 
E)  106 eV 
A)  10-6 eV 
B)  10-3 eV 
C)  1 eV 
D)  103 eV 
E)  106 eV

Question 7

X rays are emitted when the electrons hit the screen in a cathode ray tube (CRT), i.e., an old TV set. If the shortest wavelength X ray emitted is 3.7 *10-2 nm, then what is the voltage that the electrons are accelerated through in the TV set?

Accepted Answer

A)  2.1 * 10-23 V 
B)  34 kV 
C)  27 V 
D)  34 V 
E)  27 kV 
A)  2.1 * 10-23 V 
B)  34 kV 
C)  27 V 
D)  34 V 
E)  27 kV

Question 8

For the hydrogen atom in the ground state, the radial probability density is   The probability of finding the electron in range$\Delta$r = 0.08a0 at r = 2a0 is approximately

Accepted Answer

A)  2.34% 
B)  3.67% 
C)  5.86% 
D)  6.25% 
E)  7.43% 
A)  2.34% 
B)  3.67% 
C)  5.86% 
D)  6.25% 
E)  7.43%

Question 9

The energy of an X-ray photon of wavelength 3.0 * 10-10 m is

Accepted Answer

A)  1.0 *10-16 J 
B)  9.9 * 10-16 J 
C)  6.6 * 10-16 J 
D)  2.2 *10-24 J 
E)  3.2 * 10-29 J 
A)  1.0 *10-16 J 
B)  9.9 * 10-16 J 
C)  6.6 * 10-16 J 
D)  2.2 *10-24 J 
E)  3.2 * 10-29 J

Question 10

A K $\beta$  X-ray line of wavelength 0.1641 nm is emitted by a certain metal. What is the value of Z and which element is it?

Accepted Answer

A)  24, Cr 
B)  25, Mn 
C)  26, Fe 
D)  27, Co 
E)  28, Ni 
A)  24, Cr 
B)  25, Mn 
C)  26, Fe 
D)  27, Co 
E)  28, Ni

Question 11

The total number of distinct electron states (including spin) when n = 5 is

Accepted Answer

A)  18 
B)  22 
C)  25 
D)  50 
E)  72 
A)  18 
B)  22 
C)  25 
D)  50 
E)  72

Question 12

The number of electrons in the M shell for the element whose electronic configuration is
1s22s22p63s23p2
Must be

Accepted Answer

A)  2 
B)  4 
C)  6 
D)  8 
E)  10 
A)  2 
B)  4 
C)  6 
D)  8 
E)  10

Question 13

The first Bohr radius, r0, is 0.0529 nm and the corresponding energy, E0, is 13.6 eV. The wavelength of the light emitted as a hydrogen atom undergoes a transition from state n = 3 to n = 2 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 14

If the angular momentum is characterized by the quantum number   = 3, what are the possible values of Lz in units of   ?

Accepted Answer

A)  -3, 0, +3 
B)  -3, -2, -1, 0 
C)  -2, -1, 0, +1, +2 
D)  -3, -2, -1, 0, +1, +2, +3 
A)  -3, 0, +3 
B)  -3, -2, -1, 0 
C)  -2, -1, 0, +1, +2 
D)  -3, -2, -1, 0, +1, +2, +3

Question 15

The set of quantum numbers for the probability density shown is

Accepted Answer

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

Question 16

The above diagram shows the ionization energy and the shell distribution for an   atom. To produce the K $\alpha$  characteristic line, an incoming electron must have a minimum energy of

Accepted Answer

A)  EL - EM  
B)  EK - EM  
C)  EK - EL  
D)  EN  
E)  EM  
A)  EL - EM  
B)  EK - EM  
C)  EK - EL  
D)  EN  
E)  EM

Question 17

The red line in the hydrogen emission spectrum is 656 nm. If the energy of the nth level is -13.6/n 2 eV, then calculate the transition between n levels that this emitted photon comes from.

Accepted Answer

A)  n = 2 to n = 3 
B)  n = 4 to n = 3 
C)  n = 5 to n = 2 
D)  n = 3 to n = 2 
E)  n = 2 to n = 4 
A)  n = 2 to n = 3 
B)  n = 4 to n = 3 
C)  n = 5 to n = 2 
D)  n = 3 to n = 2 
E)  n = 2 to n = 4

Question 18

In the Bohr Model of the hydrogen atom, what is the ratio of the speed of the electron moving in the n = 2 orbit divided by the speed of the electron in the n = 3 orbit?

Accepted Answer

A)  0.66 
B)  1.5 
C)  2.25 
D)  0.44 
E)  its speed is independent of n 
A)  0.66 
B)  1.5 
C)  2.25 
D)  0.44 
E)  its speed is independent of n

Question 19

The above figure shows a schematic energy-level diagram for the hydrogen atom. The series that represents the Balmer series is

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  4 
E)  5 
A)  1 
B)  2 
C)  3 
D)  4 
E)  5

Question 20

The constant in the Rydberg-Ritz formula is RH = 10.96776 µm-1. The wavelength predicted by this formula for n1 = 3 and n2 = 2 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.

According to Bohr's model, the radius of an electron at n = 4 is

The p state of an electronic configuration corresponds to

The energy of the nth level in a one-electron atom is E_n = -13.6(Z²/n²) eV. Consider a beryllium ion with all but one of its electrons removed (a beryllium atom normally has four electrons). What is the energy of the electron when it is in the third-lowest energy state?

A hydrogen atom is in a state with principal quantum number n = 3. A possible value for its orbital angular momentum is

In the Bohr Model of the hydrogen atom, what is the kinetic energy of the electron in the n = 3 orbit? (The radius of the 1st Bohr orbit is 0.0529 nm.)

The energy of a photon of visible light is on the order of

X rays are emitted when the electrons hit the screen in a cathode ray tube (CRT), i.e., an old TV set. If the shortest wavelength X ray emitted is 3.7 *10^-2 nm, then what is the voltage that the electrons are accelerated through in the TV set?

The energy of an X-ray photon of wavelength 3.0 * 10^-10 m is

A K _$\beta$ X-ray line of wavelength 0.1641 nm is emitted by a certain metal. What is the value of Z and which element is it?

The total number of distinct electron states (including spin) when n = 5 is

The number of electrons in the M shell for the element whose electronic configuration is 1s²2s²2p⁶3s²3p² Must be

The first Bohr radius, r₀, is 0.0529 nm and the corresponding energy, E₀, is 13.6 eV. The wavelength of the light emitted as a hydrogen atom undergoes a transition from state n = 3 to n = 2 is

If the angular momentum is characterized by the quantum number = 3, what are the possible values of L_z in units of ?

The set of quantum numbers for the probability density shown is

The red line in the hydrogen emission spectrum is 656 nm. If the energy of the nth level is -13.6/n ² eV, then calculate the transition between n levels that this emitted photon comes from.

In the Bohr Model of the hydrogen atom, what is the ratio of the speed of the electron moving in the n = 2 orbit divided by the speed of the electron in the n = 3 orbit?

The above figure shows a schematic energy-level diagram for the hydrogen atom. The series that represents the Balmer series is

The constant in the Rydberg-Ritz formula is R_H = 10.96776 µm^-1. The wavelength predicted by this formula for n₁ = 3 and n₂ = 2 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

Exam 16: Atoms

According to Bohr's model, the radius of an electron at n = 4 is

The p state of an electronic configuration corresponds to

The energy of the nth level in a one-electron atom is En = -13.6(Z2/n2) eV. Consider a beryllium ion with all but one of its electrons removed (a beryllium atom normally has four electrons). What is the energy of the electron when it is in the third-lowest energy state?

A hydrogen atom is in a state with principal quantum number n = 3. A possible value for its orbital angular momentum is

In the Bohr Model of the hydrogen atom, what is the kinetic energy of the electron in the n = 3 orbit? (The radius of the 1st Bohr orbit is 0.0529 nm.)

The energy of a photon of visible light is on the order of

X rays are emitted when the electrons hit the screen in a cathode ray tube (CRT), i.e., an old TV set. If the shortest wavelength X ray emitted is 3.7 *10-2 nm, then what is the voltage that the electrons are accelerated through in the TV set?

For the hydrogen atom in the ground state, the radial probability density is The probability of finding the electron in range Δ\DeltaΔ r = 0.08a0 at r = 2a0 is approximately

The energy of an X-ray photon of wavelength 3.0 * 10-10 m is

A K β\betaβ X-ray line of wavelength 0.1641 nm is emitted by a certain metal. What is the value of Z and which element is it?

The total number of distinct electron states (including spin) when n = 5 is

The number of electrons in the M shell for the element whose electronic configuration is 1s22s22p63s23p2 Must be

The first Bohr radius, r0, is 0.0529 nm and the corresponding energy, E0, is 13.6 eV. The wavelength of the light emitted as a hydrogen atom undergoes a transition from state n = 3 to n = 2 is

If the angular momentum is characterized by the quantum number = 3, what are the possible values of Lz in units of ?

The set of quantum numbers for the probability density shown is

The above diagram shows the ionization energy and the shell distribution for an atom. To produce the K α\alphaα characteristic line, an incoming electron must have a minimum energy of

The red line in the hydrogen emission spectrum is 656 nm. If the energy of the nth level is -13.6/n 2 eV, then calculate the transition between n levels that this emitted photon comes from.

In the Bohr Model of the hydrogen atom, what is the ratio of the speed of the electron moving in the n = 2 orbit divided by the speed of the electron in the n = 3 orbit?

The above figure shows a schematic energy-level diagram for the hydrogen atom. The series that represents the Balmer series is

The constant in the Rydberg-Ritz formula is RH = 10.96776 µm-1. The wavelength predicted by this formula for n1 = 3 and n2 = 2 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 energy of the nth level in a one-electron atom is E_n = -13.6(Z²/n²) eV. Consider a beryllium ion with all but one of its electrons removed (a beryllium atom normally has four electrons). What is the energy of the electron when it is in the third-lowest energy state?

X rays are emitted when the electrons hit the screen in a cathode ray tube (CRT), i.e., an old TV set. If the shortest wavelength X ray emitted is 3.7 *10^-2 nm, then what is the voltage that the electrons are accelerated through in the TV set?

The energy of an X-ray photon of wavelength 3.0 * 10^-10 m is

A K _$\beta$ X-ray line of wavelength 0.1641 nm is emitted by a certain metal. What is the value of Z and which element is it?

The number of electrons in the M shell for the element whose electronic configuration is 1s²2s²2p⁶3s²3p² Must be

The first Bohr radius, r₀, is 0.0529 nm and the corresponding energy, E₀, is 13.6 eV. The wavelength of the light emitted as a hydrogen atom undergoes a transition from state n = 3 to n = 2 is

If the angular momentum is characterized by the quantum number = 3, what are the possible values of L_z in units of ?

The red line in the hydrogen emission spectrum is 656 nm. If the energy of the nth level is -13.6/n ² eV, then calculate the transition between n levels that this emitted photon comes from.

The constant in the Rydberg-Ritz formula is R_H = 10.96776 µm^-1. The wavelength predicted by this formula for n₁ = 3 and n₂ = 2 is