Question 1

Complete the following statement: For the ground state of the hydrogen atom, the Bohr model correctly predicts

Accepted Answer

A)  only the energy.
B)  only the angular momentum.
C)  only the angular momentum and the spin.
D)  the angular momentum and the energy.
E)  the energy, the angular momentum, and the spin.F) B) and E)
G) A) and E)

Question 2

Which one of the following pairs of characteristics of light is best explained by assuming that light can be described in terms of photons?

Accepted Answer

A)  photoelectric effect and the effect observed in Young's experiment
B)  diffraction and the formation of atomic spectra
C)  polarization and the photoelectric effect
D)  existence of line spectra and the photoelectric effect
E)  polarization and the formation of line spectraF) C) and D)
G) A) and E)

Question 3

How many electrons could be accommodated in an f subshell?

Accepted Answer

A)  6
B)  8
C)  10
D)  14
E)  18F) A) and C)
G) B) and C)

Question 4

The nucleus of a certain atom has a radius of 4.0 × 10-15 m. An electron orbits the nucleus at a radius of 1.5 × 10-10 m. Imagine the electron orbit is on the surface of a sphere and that the shape of the nucleus is spherical. Approximately how many nuclei would fit into the sphere on which the electron orbits?

Accepted Answer

A)  5.3 × 1013
B)  4.9 × 1011
C)  1.4 × 109
D)  7.5 × 107
E)  3.8 × 104F) D) and E)
G) A) and B)

Question 5

A neutral atom has the following electronic configuration: 1s2 2s2 2p6 3s2 3p5
-How many electrons are in the M shell?

Accepted Answer

A)  2
B)  5
C)  6
D)  7
E)  8F) C) and D)
G) None of the above

Question 6

Electrons in an X-ray tube are accelerated through a potential difference of 40 kV. The electrons then strike a zirconium (Z = 40)  target. Determine the cutoff frequency for X-ray production.

Accepted Answer

A)  4.7 × 1019 Hz
B)  9.7 × 1018 Hz
C)  3.2 × 1018 Hz
D)  6.7 × 1017 Hz
E)  1.1 × 1016 HzF) All of the above
G) A) and C)

Question 7

Complete the following statement: In the laser-based medical procedure known as photorefractive keratectomy (PRK) , nearsightedness and farsightedness can be treated using the laser to

Accepted Answer

A)  remove small amounts of tissue from the lens and change its curvature.
B)  remove small amounts of tissue from the cornea and change its curvature.
C)  change the index of refraction of the aqueous humor.
D)  alter the fluid pressure within the eye.
E)  stimulate unused rods and cones on the retina.F) A) and B)
G) C) and D)

Question 8

Which one of the following subshells is not compatible with a principle quantum number of n = 4?

Accepted Answer

A)  s
B)  p
C)  d
D)  f
E)  gF) A) and B)
G) B) and C)

Question 9

Which one of the following statements concerning the plum-pudding model of the atom is false?

Accepted Answer

A)  There is no nucleus at the center of the plum-pudding model atom.
B)  The plum-pudding model was proven correct in experiments by Ernest Rutherford.
C)  The plum-pudding model was proposed by Joseph J. Thomson.
D)  Positive charge is spread uniformly throughout the plum-pudding model atom.
E)  Negative electrons are dispersed uniformly within the positively charged "pudding" within the plum-pudding model atom.F) A) and E)
G) A) and C)

Question 10

Consider the following list of electron configurations: 
-Which one of the above lists represents the electronic configuration for the ground state of the atom with Z = 11?

Accepted Answer

A)  1
B)  2
C)  3
D)  4
E)  5F) B) and E)
G) None of the above

Question 11

To which model of atomic structure does the Pauli exclusion principle apply?

Accepted Answer

A)  the nuclear atom
B)  the quantum mechanical atom
C)  the billiard ball atom
D)  the plum-pudding model
E)  the planetary modelF) A) and C)
G) A) and B)

Question 12

According to the quantum mechanical picture of the atom, which one of the following is a true statement concerning the ground state electron in a hydrogen atom?

Accepted Answer

A)  The ground state electron has zero kinetic energy.
B)  The ground state electron has zero binding energy.
C)  The ground state electron has zero ionization energy.
D)  The ground state electron has zero spin angular momentum.
E)  The ground state electron has zero orbital angular momentum.F) B) and C)
G) A) and E)

Question 13

The kinetic energy of the ground state electron in hydrogen is +13.6 eV. What is its potential energy?

Accepted Answer

A)  -13.6 eV
B)  +27.2 eV
C)  -27.2 eV
D)  +56.2 eV
E)  zero eVF) C) and E)
G) C) and D)

Question 14

A neutral atom has the following electronic configuration: 1s2 2s2 2p6 3s2 3p5
-How many protons are in the atomic nucleus?

Accepted Answer

A)  4
B)  7
C)  12
D)  17
E)  34F) A) and D)
G) B) and D)

Question 15

Which one of the following sets of quantum numbers is not possible?

Accepted Answer

A)   
B)   
C)   
D)   
E)   F) A) and C)
G) None of the above

Question 16

Which electron energy will produce the largest cutoff wavelength for X-ray production from a nickel (Z = 28)  surface?

Accepted Answer

A)  25 keV
B)  30 keV
C)  35 keV
D)  40 keV
E)  45 keVF) A) and B)
G) A) and C)

Question 17

Which one of the following statements concerning the cutoff wavelength typically exhibited in X-ray spectra is true?

Accepted Answer

A)  The cutoff wavelength depends on the target material.
B)  The cutoff wavelength depends on the potential difference across the X-ray tube.
C)  The cutoff wavelength is independent of the energy of the incident electrons.
D)  The cutoff wavelength occurs because of the mutual shielding effects of K-shell electrons.
E)  The cutoff wavelength occurs because an incident electron cannot give up all of its energy.F) A) and D)
G) A) and E)

Question 18

Determine the energy of the photon emitted when the electron in a hydrogen atom undergoes a transition from the n = 7 level to the n = 4 level.

Accepted Answer

A)  0.17 eV
B)  0.21 eV
C)  0.36 eV
D)  0.57 eV
E)  1.3 eVF) None of the above
G) C) and D)

Question 19

Two possible states for the hydrogen atom are labeled A and B. The maximum magnetic quantum number for state A is +3. For state B, the maximum value is +1. What is the ratio of the magnitudes of the orbital angular momenta, LA/LB, of an electron in these two states?

Accepted Answer

A)  1.22
B)  1.73
C)  2.00
D)  2.45
E)  3.46F) A) and E)
G) B) and D)

Question 20

An electron is in the ground state of a hydrogen atom. A photon is absorbed by the atom and the electron is excited to the n = 2 state. What is the energy in eV of the photon?

Accepted Answer

A)  13.6 eV
B)  10.2 eV
C)  3.40 eV
D)  1.51 eV
E)  0.54 eVF) B) and C)
G) None of the above

Exam 30: The Nature of the Atom

Correct Answer
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Which electron energy will produce the largest cutoff wavelength for X-ray production from a nickel (Z = 28) surface?

Correct Answer
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According to the quantum mechanical picture of the atom, which one of the following is a true statement concerning the ground state electron in a hydrogen atom?

Correct Answer
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Consider the following list of electron configurations: -Which one of the above lists represents the electronic configuration for the ground state of the atom with Z = 11?

Correct Answer
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The kinetic energy of the ground state electron in hydrogen is +13.6 eV. What is its potential energy?

Correct Answer
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A neutral atom has the following electronic configuration: 1s² 2s² 2p⁶ 3s² 3p⁵ -How many protons are in the atomic nucleus?

Correct Answer
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Which one of the following statements concerning the cutoff wavelength typically exhibited in X-ray spectra is true?

Correct Answer
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Electrons in an X-ray tube are accelerated through a potential difference of 40 kV. The electrons then strike a zirconium (Z = 40) target. Determine the cutoff frequency for X-ray production.

Correct Answer
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A neutral atom has the following electronic configuration: 1s² 2s² 2p⁶ 3s² 3p⁵ -How many electrons are in the M shell?

Correct Answer
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Which one of the following sets of quantum numbers is not possible?

Correct Answer
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Determine the energy of the photon emitted when the electron in a hydrogen atom undergoes a transition from the n = 7 level to the n = 4 level.

Correct Answer
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An electron is in the ground state of a hydrogen atom. A photon is absorbed by the atom and the electron is excited to the n = 2 state. What is the energy in eV of the photon?

Correct Answer
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Complete the following statement: For the ground state of the hydrogen atom, the Bohr model correctly predicts

Correct Answer
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Which one of the following statements concerning the plum-pudding model of the atom is false?

Correct Answer
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Which one of the following pairs of characteristics of light is best explained by assuming that light can be described in terms of photons?

Correct Answer
verified

To which model of atomic structure does the Pauli exclusion principle apply?

Correct Answer
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How many electrons could be accommodated in an f subshell?

Correct Answer
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Complete the following statement: In the laser-based medical procedure known as photorefractive keratectomy (PRK) , nearsightedness and farsightedness can be treated using the laser to

Correct Answer
verified

Two possible states for the hydrogen atom are labeled A and B. The maximum magnetic quantum number for state A is +3. For state B, the maximum value is +1. What is the ratio of the magnitudes of the orbital angular momenta, L_A/L_B, of an electron in these two states?

Correct Answer
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Which one of the following subshells is not compatible with a principle quantum number of n = 4?

Correct Answer
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Exam 30: The Nature of the Atom

Correct AnswerverifiedShow Answer

Which electron energy will produce the largest cutoff wavelength for X-ray production from a nickel (Z = 28) surface?

Correct AnswerverifiedShow Answer

According to the quantum mechanical picture of the atom, which one of the following is a true statement concerning the ground state electron in a hydrogen atom?

Correct AnswerverifiedShow Answer

Consider the following list of electron configurations: -Which one of the above lists represents the electronic configuration for the ground state of the atom with Z = 11?

Correct AnswerverifiedShow Answer

The kinetic energy of the ground state electron in hydrogen is +13.6 eV. What is its potential energy?

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A neutral atom has the following electronic configuration: 1s2 2s2 2p6 3s2 3p5 -How many protons are in the atomic nucleus?

Correct AnswerverifiedShow Answer

Which one of the following statements concerning the cutoff wavelength typically exhibited in X-ray spectra is true?

Correct AnswerverifiedShow Answer

Electrons in an X-ray tube are accelerated through a potential difference of 40 kV. The electrons then strike a zirconium (Z = 40) target. Determine the cutoff frequency for X-ray production.

Correct AnswerverifiedShow Answer

A neutral atom has the following electronic configuration: 1s2 2s2 2p6 3s2 3p5 -How many electrons are in the M shell?

Correct AnswerverifiedShow Answer

Which one of the following sets of quantum numbers is not possible?

Correct AnswerverifiedShow Answer

Determine the energy of the photon emitted when the electron in a hydrogen atom undergoes a transition from the n = 7 level to the n = 4 level.

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An electron is in the ground state of a hydrogen atom. A photon is absorbed by the atom and the electron is excited to the n = 2 state. What is the energy in eV of the photon?

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Complete the following statement: For the ground state of the hydrogen atom, the Bohr model correctly predicts

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Which one of the following statements concerning the plum-pudding model of the atom is false?

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Which one of the following pairs of characteristics of light is best explained by assuming that light can be described in terms of photons?

Correct AnswerverifiedShow Answer

To which model of atomic structure does the Pauli exclusion principle apply?

Correct AnswerverifiedShow Answer

How many electrons could be accommodated in an f subshell?

Correct AnswerverifiedShow Answer

Complete the following statement: In the laser-based medical procedure known as photorefractive keratectomy (PRK) , nearsightedness and farsightedness can be treated using the laser to

Correct AnswerverifiedShow Answer

Two possible states for the hydrogen atom are labeled A and B. The maximum magnetic quantum number for state A is +3. For state B, the maximum value is +1. What is the ratio of the magnitudes of the orbital angular momenta, LA/LB, of an electron in these two states?

Correct AnswerverifiedShow Answer

Which one of the following subshells is not compatible with a principle quantum number of n = 4?

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A neutral atom has the following electronic configuration: 1s² 2s² 2p⁶ 3s² 3p⁵ -How many protons are in the atomic nucleus?

Correct Answer
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A neutral atom has the following electronic configuration: 1s² 2s² 2p⁶ 3s² 3p⁵ -How many electrons are in the M shell?

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Two possible states for the hydrogen atom are labeled A and B. The maximum magnetic quantum number for state A is +3. For state B, the maximum value is +1. What is the ratio of the magnitudes of the orbital angular momenta, L_A/L_B, of an electron in these two states?

Correct Answer
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Correct Answer
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