Question 1

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 2

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 3

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 4

For which of the following transitions in a hydrogen atom free of external fields does the electron energy increase?​

Accepted Answer

A) ​The electron moves from n = 2 to n = 1. 
B) The electron moves from n = 3 to n = 5. 
C) ​Within the n = 4,l = 2 sublevel,the electron moves from   = -1 to   = +1. 
D) ​Within the n = 3 level,the electron moves from   = 2 to   = -2. 
A) ​The electron moves from n = 2 to n = 1. 
B) The electron moves from n = 3 to n = 5. 
C) ​Within the n = 4,l = 2 sublevel,the electron moves from   = -1 to   = +1. 
D) ​Within the n = 3 level,the electron moves from   = 2 to   = -2.

Question 5

Characteristic K x-rays are the result of:

Accepted Answer

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

Question 6

The quantum mechanical model of the hydrogen atom suggests a visual picture of the electron as which of the following?

Accepted Answer

A) raisin in pudding 
B) probability cloud 
C) planetary orbiting body 
D) light quantum 
A) raisin in pudding 
B) probability cloud 
C) planetary orbiting body 
D) light quantum

Question 7

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 8

In an x-ray machine,electrons are accelerated and then fired so that they are incident on a metal target.Which part of the process produces the characteristic x-ray spectra?

Accepted Answer

A) The incident electron loses energy. 
B) The incident electron knocks an electron out of one of the metal atoms. 
C) A vacancy in an energy level in a metal atom is filled. 
D) The incident electron emits an x-ray. 
A) The incident electron loses energy. 
B) The incident electron knocks an electron out of one of the metal atoms. 
C) A vacancy in an energy level in a metal atom is filled. 
D) The incident electron emits an x-ray.

Question 9

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 10

The speed of the electron in the Bohr theory of hydrogen is

Accepted Answer

A) proportional to n. 
B) proportional to n2. 
C) inversely proportional to n. 
D) inversely proportional to n2. 
A) proportional to n. 
B) proportional to n2. 
C) inversely proportional to n. 
D) inversely proportional to n2.

Question 11

What is the maximum number of electrons that can occupy a 3d subshell?

Accepted Answer

A) 5 
B) 14 
C) 10 
D) 18 
A) 5 
B) 14 
C) 10 
D) 18

Question 12

When a high voltage is applied to a low-pressure gas causing it to glow,it will emit which type of spectrum?

Accepted Answer

A) line emission 
B) line absorption 
C) continuous 
D) monochromatic 
A) line emission 
B) line absorption 
C) continuous 
D) monochromatic

Question 13

​When a hydrogen atom absorbs a photon that raises it to the n = 7 state,what is the greatest number of photons that can be emitted by that atom as it returns to the ground state?

Accepted Answer

A) 6 
B) 7 
C) 8 
D) ​14 
E) ​The correct answer is not given. 
A) 6 
B) 7 
C) 8 
D) ​14 
E) ​The correct answer is not given.

Question 14

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 15

The restriction that no more than one electron may occupy a given quantum state in an atom was first stated by which of the following scientists?

Accepted Answer

A) Bohr 
B) de Broglie 
C) Heisenberg 
D) Pauli 
A) Bohr 
B) de Broglie 
C) Heisenberg 
D) Pauli

Question 16

Which of the following transitions in hydrogen from an initial state (ni)to a final state (nf)results in the most energy emitted?

Accepted Answer

A) ni = 80,nf = 2 
B) ni = 3,nf = 95 
C) ni = 2,nf = 1 
D) ni = 1,nf = 3 
A) ni = 80,nf = 2 
B) ni = 3,nf = 95 
C) ni = 2,nf = 1 
D) ni = 1,nf = 3

Question 17

The quantity ________,where Ψ is the wave function,represents the probability per unit volume of finding an electron in that volume.

Accepted Answer

A) Ψ1/2 
B) Ψ 
C) Ψ3/2 
D) Ψ2 
A) Ψ1/2 
B) Ψ 
C) Ψ3/2 
D) Ψ2

Question 18

The red light from a HeNe laboratory laser results from a transition in Ne.Determine the wavelength of the light given off if the energy difference between states is 1.08 eV.(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) 383 nm 
B) 1840 nm 
C) 1150 nm 
D) 1340 nm 
E) ​203 nm 
A) 383 nm 
B) 1840 nm 
C) 1150 nm 
D) 1340 nm 
E) ​203 nm

Question 19

The ground state electronic configuration for silicon is 1s22s22p63s23p2.Which of the following elements would be expected to be chemically similar to silicon?

Accepted Answer

A) boron with configuration 1s22s22p1 
B) lithium with configuration 1s22s1 
C) carbon with configuration 1s22s22p2 
D) sodium with configuration 1s22s22p63s1 
A) boron with configuration 1s22s22p1 
B) lithium with configuration 1s22s1 
C) carbon with configuration 1s22s22p2 
D) sodium with configuration 1s22s22p63s1

Question 20

The Lyman series of hydrogen is made up of those transitions made from higher levels to n = 1.If the fifth line in this series has a wavelength of 94 nm,what is the wavelength of the sixth line?

Accepted Answer

A) 106 nm 
B) 93 nm 
C) 117 nm 
D) 102 nm 
E) ​124 nm 
A) 106 nm 
B) 93 nm 
C) 117 nm 
D) 102 nm 
E) ​124 nm

Exam 28: Atomic Physics

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

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?

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)

For which of the following transitions in a hydrogen atom free of external fields does the electron energy increase?​

Characteristic K x-rays are the result of:

The quantum mechanical model of the hydrogen atom suggests a visual picture of the electron as which of the following?

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?

In an x-ray machine,electrons are accelerated and then fired so that they are incident on a metal target.Which part of the process produces the characteristic x-ray spectra?

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)

The speed of the electron in the Bohr theory of hydrogen is

What is the maximum number of electrons that can occupy a 3d subshell?

When a high voltage is applied to a low-pressure gas causing it to glow,it will emit which type of spectrum?

​When a hydrogen atom absorbs a photon that raises it to the n = 7 state,what is the greatest number of photons that can be emitted by that atom as it returns to the ground state?

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

The restriction that no more than one electron may occupy a given quantum state in an atom was first stated by which of the following scientists?

Which of the following transitions in hydrogen from an initial state (ni)to a final state (nf)results in the most energy emitted?

The quantity ________,where Ψ is the wave function,represents the probability per unit volume of finding an electron in that volume.

The red light from a HeNe laboratory laser results from a transition in Ne.Determine the wavelength of the light given off if the energy difference between states is 1.08 eV.(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 ground state electronic configuration for silicon is 1s22s22p63s23p2.Which of the following elements would be expected to be chemically similar to silicon?

The Lyman series of hydrogen is made up of those transitions made from higher levels to n = 1.If the fifth line in this series has a wavelength of 94 nm,what is the wavelength of the sixth line?

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

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)

For which of the following transitions in a hydrogen atom free of external fields does the electron energy increase?

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 a hydrogen atom absorbs a photon that raises it to the n = 7 state,what is the greatest number of photons that can be emitted by that atom as it returns to the ground state?

Which of the following transitions in hydrogen from an initial state (n_i)to a final state (n_f)results in the most energy emitted?

The red light from a HeNe laboratory laser results from a transition in Ne.Determine the wavelength of the light given off if the energy difference between states is 1.08 eV.(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 ground state electronic configuration for silicon is 1s²2s²2p⁶3s²3p².Which of the following elements would be expected to be chemically similar to silicon?