Question 1

A possible set of quantum numbers to describe an electron in a 3d subshell is

Accepted Answer

A)  n = 3, l = 0, ml = 0 , ms = +1/2
B)  n = 3, l = 1, ml = 0, ms = - 1/2
C)  n = 3, l = 2, ml = 1, ms = +1/2
D)  n = 3, l = 3, ml = 1, ms = - 1/2
E)  n = 2, l = 0, ml = 0, ms = +1/2F) A) and E)
G) A) and C)

Question 2

Which of the following is diamagnetic both in its ground state and in all of its excited states?

Accepted Answer

A)  Mg
B)  Ne
C)  Cu
D)  Zn
E)  none of theseF) B) and C)
G) A) and E)

Question 3

The colors of the visible spectrum are blue, green, orange, red, violet, and yellow.Of these colors, _______ has the most energy.

Accepted Answer

The answer of The colors of the visible spectrum are...

Question 4

Calculate the wavelength of the light emitted by a hydrogen atom during a transition of its electron from the n = 4 to the n = 1 principal energy level.Recall that for hydrogen En = -2.18 × 10-18 J(1/n2)

Accepted Answer

A)  6.8 × 10-18 nm
B)  0.612 nm
C)  82.6 nm
D)  97.2 nm
E)  365 nmF) C) and E)
G) B) and D)

Question 5

Calculate the frequency of the light emitted by a hydrogen atom during a transition of its electron from the n = 6 to the n = 3 principal energy level.Recall that for hydrogen En = -2.18 × 10-18 J(1/n2) .

Accepted Answer

A)  1.82 × 10-19 /s
B)  9.13 × 1013 /s
C)  2.74 × 1014/s
D)  3.65 × 1014 /s
E)  1.64 × 1015 /sF) A) and C)
G) C) and D)

Question 6

Which one of the following sets of quantum numbers represents an electron with the highest energy?

Accepted Answer

A)  n = 3, l = 2, ml = -2, ms = +1/2
B)  n = 4, l = 1, ml = 0, ms = -1/2
C)  n = 4, l = 0, ml = 0, ms = +1/2
D)  n = 5, l = 0, ml = 0, ms = +1/2
E)  n = 4, l = 2, ml = -1, ms = -1/2F) B) and E)
G) C) and D)

Question 7

A possible set of quantum numbers for the last electron added to complete an atom of gallium (Ga) in its ground state is

Accepted Answer

A)  A
B)  B
C)  C
D)  D
E)  EF) D) and E)
G) B) and D)

Question 8

A proton is roughly 1800 times more massive than an electron.If a proton and an electron are traveling at the same speed,

Accepted Answer

A)  the wavelength of the photon will be about 1800 times longer than the wavelength of the electron.
B)  the wavelength of the photon will be about  times longer than the wavelength of the electron.
C)  the wavelength of the photon will be roughly equal to the wavelength of the electron.
D)  the wavelength of the electron will be about  times longer than the wavelength of the photon.
E)  the wavelength of the electron will be about 1800 times longer than the wavelength of the photon.F) All of the above
G) C) and E)

Question 9

Does an electron gain or lose energy in the transition from a 4d subshell to a 5s subshell?

Accepted Answer

The answer of Does an electron gain or lose energy...

Question 10

Which of the following is the electron configuration of an excited state of an oxygen atom?

Accepted Answer

A)  1s22s22p4
B)  1s22s22p5
C)  1s22s22p33s1
D)  1s22s22p6
E)  1s22s22p3F) All of the above
G) A) and E)

Question 11

How many orbitals are allowed in a subshell if l = 3?

Accepted Answer

A)  1
B)  3
C)  5
D)  7
E)  9F) A) and E)
G) A) and D)

Question 12

Which of the following electronic transitions is consistent with a decrease in energy?

Accepted Answer

A)  From a 5s subshell to a 4d subshell
B)  From a 4f subshell to a 5p subshell
C)  From a 6s subshell to a 5d subshell
D)  From a 5s subshell to a 5p subshell
E)  From a 4f subshell to a 6p subshellF) A) and E)
G) B) and C)

Question 13

If a hydrogen atom and a helium atom have the same kinetic energy,

Accepted Answer

A)  the wavelength of the hydrogen atom will be about 4 times longer than the wavelength of the helium atom.
B)  the wavelength of the hydrogen atom will be about 2 times longer than the wavelength of the helium.
C)  the wavelength of the hydrogen atom will be roughly equal to the wavelength of the helium atom.
D)  the wavelength of the helium atom will be about 2 times longer than the wavelength of the hydrogen atom.
E)  the wavelength of the helium atom will be about 4 times longer than the wavelength of the hydrogen atom.F) B) and E)
G) C) and D)

Question 14

What is the binding energy (in J/mol or kJ/mol) of an electron in a metal whose threshold frequency for photoelectrons is 2.50 × 1014 /s?

Accepted Answer

A)  2.75 × 10-43 J/mol
B)  1.66 × 10-19 J/mol
C)  1.20 × 10-6 J/mol
D)  99.7 kJ/mol
E)  7.22 × 1017 kJ/molF) A) and D)
G) A) and C)

Question 15

What is the wavelength of a ball bearing with a mass of 10.0 g, and a velocity of 10.0 cm/s?

Accepted Answer

The answer of What is the wavelength of a ball...

Question 16

The electron configuration of a ground-state vanadium atom is

Accepted Answer

A)  [Ar]4s24d3
B)  [Ar]4s24p3
C)  [Ar]4s23d3
D)  [Ar]3d5E) C) and D)
F) A) and D)

Question 17

Which of the following frequencies of light has the highest energy?

Accepted Answer

A)  2.5 x 1010 s-1
B)  7.0 x 1013 s-1
C)  2.3 x 1014 s-1
D)  5.0 x 1014 s-1
E)  1.4 x 1015 s-1F) D) and E)
G) A) and E)

Question 18

What is the energy in joules of one photon of x-ray radiation with a wavelength of 0.120 nm?

Accepted Answer

A)  2.50 x 109 J
B)  1.66 x 10-24 J
C)  1.66 x 10-33 J
D)  2.50 x 1018J
E)  1.66 x 10-15JF) None of the above
G) A) and E)

Question 19

Which of the following atoms is paramagnetic both in its ground state and in all of its excited states?

Accepted Answer

A)  C
B)  N
C)  O
D)  Ti
E)  CrF) A) and E)
G) A) and D)

Question 20

What is the maximum number of electrons in an atom that can have the following set of quantum numbers? n = 3 l = 1 ml = -1

Accepted Answer

A)  18
B)  6
C)  3
D)  2
E)  1F) A) and B)
G) A) and C)

Exam 7: Quantum Theory and the Electronic Structure of Atoms

Which of the following atoms is paramagnetic both in its ground state and in all of its excited states?

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A proton is roughly 1800 times more massive than an electron.If a proton and an electron are traveling at the same speed,

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Which one of the following sets of quantum numbers represents an electron with the highest energy?

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The colors of the visible spectrum are blue, green, orange, red, violet, and yellow.Of these colors, _______ has the most energy.

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A possible set of quantum numbers for the last electron added to complete an atom of gallium (Ga) in its ground state is

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Which of the following is the electron configuration of an excited state of an oxygen atom?

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A possible set of quantum numbers to describe an electron in a 3d subshell is

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How many orbitals are allowed in a subshell if l = 3?

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What is the binding energy (in J/mol or kJ/mol) of an electron in a metal whose threshold frequency for photoelectrons is 2.50 × 1014 /s?

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Which of the following is diamagnetic both in its ground state and in all of its excited states?

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Which of the following frequencies of light has the highest energy?

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What is the wavelength of a ball bearing with a mass of 10.0 g, and a velocity of 10.0 cm/s?

Correct AnswerverifiedShow Answer

The electron configuration of a ground-state vanadium atom is

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If a hydrogen atom and a helium atom have the same kinetic energy,

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Does an electron gain or lose energy in the transition from a 4d subshell to a 5s subshell?

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What is the maximum number of electrons in an atom that can have the following set of quantum numbers? n = 3 l = 1 ml = -1

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Calculate the frequency of the light emitted by a hydrogen atom during a transition of its electron from the n = 6 to the n = 3 principal energy level.Recall that for hydrogen En = -2.18 × 10-18 J(1/n2) .

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Which of the following electronic transitions is consistent with a decrease in energy?

Correct AnswerverifiedShow Answer

What is the energy in joules of one photon of x-ray radiation with a wavelength of 0.120 nm?

Correct AnswerverifiedShow Answer

Calculate the wavelength of the light emitted by a hydrogen atom during a transition of its electron from the n = 4 to the n = 1 principal energy level.Recall that for hydrogen En = -2.18 × 10-18 J(1/n2)

Correct AnswerverifiedShow Answer

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What is the binding energy (in J/mol or kJ/mol) of an electron in a metal whose threshold frequency for photoelectrons is 2.50 × 10¹⁴/s?

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What is the maximum number of electrons in an atom that can have the following set of quantum numbers? n = 3 l = 1 m_l = -1

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Calculate the frequency of the light emitted by a hydrogen atom during a transition of its electron from the n = 6 to the n = 3 principal energy level.Recall that for hydrogen E_n = -2.18 × 10^-18 J(1/n²) .

Correct Answer
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Calculate the wavelength of the light emitted by a hydrogen atom during a transition of its electron from the n = 4 to the n = 1 principal energy level.Recall that for hydrogen E_n = -2.18 × 10^-18 J(1/n²)

Correct Answer
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