Question 1

Write the ground state electron configuration for a lead atom.

Accepted Answer

[Xe] 6s²4f¹⁴5...

Question 2

Using the figure below, categorize electromagnetic radiation with a wavelength of 1.0 x 10-1 m. -1 m.   A) Gamma rays B) X rays C) Ultraviolet D) Infrared E) Microwave" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)  Gamma rays
B)  X rays
C)  Ultraviolet
D)  Infrared
E)  MicrowaveF) C) and D)
G) B) and D)

Question 3

Which of the following wavelengths of electromagnetic radiation has the highest energy?

Accepted Answer

A)  450.nm
B)  225 nm
C)  3.50 x 10-9 m
D)  8.40 x 10-7 m
E)  2.50 x 10-5 mF) A) and B)
G) A) and C)

Question 4

An electron in a 3p orbital could have a value of 2 for its angular momentum quantum number (l).

Accepted Answer

A) True 
 B)False

Question 5

Which of the following electronic transitions is consistent with an increase in energy?

Accepted Answer

A)  From a 4s subshell to a 3d subshell
B)  From a 5p subshell to a 4d subshell
C)  From a 4d subshell to a 5s subshell
D)  From a 4f subshell to a 6s subshell
E)  From a 5d subshell to a 6s subshellF) None of the above
G) B) and D)

Question 6

What is the energy in joules of one photon of microwave radiation with a wavelength 0.122 m? (c = 2.9979 × 108 m/s; h = 6.626 × 10-34 J.s)

Accepted Answer

A)  2.70 × 10-43 J
B)  5.43 × 10-33 J
C)  1.63 × 10-24 J
D)  4.07 × 10-10 J
E)  2.46 × 109 JF) A) and B)
G) None of the above

Question 7

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

Accepted Answer

A)  [Ar]4s23d7
B)  [Ar]4s23d6
C)  [Ar]4s23d8
D)  [Ar]4s13d7
E)  [Ar]4s13d5F) B) and E)
G) All of the above

Question 8

For all atoms of the same element, the 2s orbital is larger than the 1s orbital.

Accepted Answer

A) True 
 B)False

Question 9

A ground-state chromium atom has how many unpaired electrons?

Accepted Answer

A)  1
B)  2
C)  4
D)  5
E)  6F) A) and E)
G) B) and D)

Question 10

Which of the following is the ground-state electron configuration of Pb?

Accepted Answer

A)  [Xe]6s25d106p2
B)  [Xe]6s26d106p2
C)  [Xe]6s24f146p2
D)  [Xe]6s25f146d106p2
E)  [Xe]6s24f145d106p2F) C) and D)
G) B) and E)

Question 11

The orbital diagram for a ground-state oxygen atom is

Accepted Answer

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

Question 12

Calculate the wavelength, in nanometers, of the light emitted by a hydrogen atom when its electron falls from the n = 7 to the n = 4 principal energy level.Recall that the energy levels of the H atom are given by En = -2.18 × 10-18 J(1/n2)

Accepted Answer

A)  9.18 × 10-20 nm
B)  4.45 × 10-20 nm
C)  2.16 × 10-6 nm
D)  2.16 × 103 nm
E)  1.38 × 1014 nmF) A) and D)
G) A) and C)

Question 13

A ground-state atom of iron has ___ unpaired electrons and is _____.

Accepted Answer

A)  0, diamagnetic
B)  6, diamagnetic
C)  3, paramagnetic
D)  5, paramagnetic
E)  4, paramagneticF) B) and D)
G) A) and B)

Question 14

Using the figure below, categorize electromagnetic radiation with a wavelength of 1.0 x 10-3 m. -3 m.   A) Gamma rays B) X rays C) Ultraviolet D) Infrared E) Microwave" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)  Gamma rays
B)  X rays
C)  Ultraviolet
D)  Infrared
E)  MicrowaveF) A) and B)
G) None of the above

Question 15

Does an electron gain or lose energy in the transition from a 6s subshell to a 5d subshell?

Accepted Answer

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

Question 16

A common way of initiating certain chemical reactions with light involves the generation of free halogen atoms in solution.If  Δ\DeltaΔ H for the reaction Cl2(g)  →\rarr→  2Cl(g) is 242.8 kJ/mol, what is the longest wavelength of light that will produce free chlorine atoms in solution?

Accepted Answer

A)  246.3 nm
B)  349.3 nm
C)  465.2 nm
D)  492.6 nm
E)  698.6 nm F) C) and D)
G) None of the above

Question 17

Which ground-state atom has an electron configuration described by the following orbital diagram?

Accepted Answer

A)  phosphorus
B)  germanium
C)  selenium
D)  tellurium
E)  none of theseF) A) and D)
G) A) and B)

Question 18

Define Heisenberg uncertainty principle:

Accepted Answer

it is impossible to know simul...

Question 19

The colors of the visible spectrum are blue, green, orange, red, violet, and yellow.Of these colors, ______ has the shortest wavelength.

Accepted Answer

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

Question 20

The longest wavelength of light that causes electrons to be ejected from the surface of a copper plate is 243 nm.What is the maximum velocity of the electrons ejected when light of wavelength 200.nm shines on a copper plate?

Accepted Answer

A)  1.97 × 104 m/s
B)  4.67 × 104 m/s
C)  6.22 × 105 m/s
D)  1.34 × 106 m/s
E)  1.48 × 106 m/sF) None of the above
G) B) and C)

Exam 7: Quantum Theory and the Electronic Structure of Atoms

Which ground-state atom has an electron configuration described by the following orbital diagram?

Correct AnswerverifiedShow Answer

Does an electron gain or lose energy in the transition from a 6s subshell to a 5d subshell?

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

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Define Heisenberg uncertainty principle:

Correct Answerverifiedit is impossible to know simul...View AnswerShow Answer

What is the energy in joules of one photon of microwave radiation with a wavelength 0.122 m? (c = 2.9979 × 108 m/s; h = 6.626 × 10-34 J.s)

Correct AnswerverifiedShow Answer

Calculate the wavelength, in nanometers, of the light emitted by a hydrogen atom when its electron falls from the n = 7 to the n = 4 principal energy level.Recall that the energy levels of the H atom are given by En = -2.18 × 10-18 J(1/n2)

Correct AnswerverifiedShow Answer

Which of the following wavelengths of electromagnetic radiation has the highest energy?

Correct AnswerverifiedShow Answer

Which of the following is the ground-state electron configuration of Pb?

Correct AnswerverifiedShow Answer

The colors of the visible spectrum are blue, green, orange, red, violet, and yellow.Of these colors, ______ has the shortest wavelength.

Correct AnswerverifiedShow Answer

For all atoms of the same element, the 2s orbital is larger than the 1s orbital.

Correct AnswerverifiedShow Answer

An electron in a 3p orbital could have a value of 2 for its angular momentum quantum number (l).

Correct AnswerverifiedShow Answer

A common way of initiating certain chemical reactions with light involves the generation of free halogen atoms in solution.If Δ\DeltaΔ H for the reaction Cl2(g) →\rarr→ 2Cl(g) is 242.8 kJ/mol, what is the longest wavelength of light that will produce free chlorine atoms in solution?

Correct AnswerverifiedShow Answer

Using the figure below, categorize electromagnetic radiation with a wavelength of 1.0 x 10-1 m.

Correct AnswerverifiedShow Answer

Using the figure below, categorize electromagnetic radiation with a wavelength of 1.0 x 10-3 m.

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Which of the following electronic transitions is consistent with an increase in energy?

Correct AnswerverifiedShow Answer

A ground-state chromium atom has how many unpaired electrons?

Correct AnswerverifiedShow Answer

Write the ground state electron configuration for a lead atom.

Correct Answerverified[Xe] 6s24f145...View AnswerShow Answer

The longest wavelength of light that causes electrons to be ejected from the surface of a copper plate is 243 nm.What is the maximum velocity of the electrons ejected when light of wavelength 200.nm shines on a copper plate?

Correct AnswerverifiedShow Answer

A ground-state atom of iron has ___ unpaired electrons and is _____.

Correct AnswerverifiedShow Answer

The orbital diagram for a ground-state oxygen atom is

Correct AnswerverifiedShow Answer

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it is impossible to know simul...
View Answer

What is the energy in joules of one photon of microwave radiation with a wavelength 0.122 m? (c = 2.9979 × 10⁸ m/s; h = 6.626 × 10^-34 J.s)

Correct Answer
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Calculate the wavelength, in nanometers, of the light emitted by a hydrogen atom when its electron falls from the n = 7 to the n = 4 principal energy level.Recall that the energy levels of the H atom are given by E_n = -2.18 × 10^-18 J(1/n²)

Correct Answer
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Correct Answer
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A common way of initiating certain chemical reactions with light involves the generation of free halogen atoms in solution.If $\Delta$ H for the reaction Cl₂(g) $\rarr$ 2Cl(g) is 242.8 kJ/mol, what is the longest wavelength of light that will produce free chlorine atoms in solution?

Correct Answer
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Using the figure below, categorize electromagnetic radiation with a wavelength of 1.0 x 10^-1 m.

Correct Answer
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Using the figure below, categorize electromagnetic radiation with a wavelength of 1.0 x 10^-3 m.

Correct Answer
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[Xe] 6s²4f¹⁴5...
View Answer

Correct Answer
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A ground-state atom of iron has _ unpaired electrons and is ___.

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Correct Answer
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