Question 1

Line spectra from all regions of the electromagnetic spectrum, including the Paschen series of infrared lines for hydrogen, are used by astronomers to identify elements present in the atmospheres of stars. Calculate the wavelength of the photon emitted when the hydrogen atom undergoes a transition from n = 5 to n = 3. (R = 1.096776 * 107 m¯1)

Accepted Answer

A)   205.1 nm
B)   384.6 nm
C)   683.8 nm
D)   1282 nm
E)   > 1500 nmF) A) and E)
G) B) and E)

Question 2

The Bohr theory of the hydrogen atom predicts the energy difference (in J)  between the n= 3 and the n = 5 state to be

Accepted Answer

A)   8.72 * 10¯20 J
B)   1.36 * 10¯19 J
C)   2.42 *10¯19 J
D)   1.55 * 10¯19 J
E)   1.09 *10¯18 JF) D) and E)
G) A) and E)

Question 3

Atomic orbitals developed using quantum mechanics

Accepted Answer

A)   describe regions of space in which one is most likely to find an electron.
B)   describe exact paths for electron motion.
C)   give a description of the atomic structure which is essentially the same as the Bohr model.
D)   allow scientists to calculate an exact volume for the hydrogen atom.
E)   are in conflict with the Heisenberg Uncertainty Principle.F) B) and E)
G) A) and C)

Question 4

Explain the context and meanings of the terms "orbit" and "orbital," making a clear distinction between them.

Accepted Answer

Orbit is a term from the Bohr theory, an...

Question 5

Electromagnetic radiation of 500 nm wavelength lies in the ______________ region of the spectrum.

Accepted Answer

A)   infrared
B)   visible
C)   ultraviolet
D)   X-ray
E)   g-rayF) A) and B)
G) A) and C)

Question 6

Other factors being constant, a heavy object will have a longer de Broglie wavelength than a light object.

Accepted Answer

A) True 
 B)False

Question 7

A radio wave has a frequency of 8.6 * 108 Hz. What is the energy of one photon of this radiation?

Accepted Answer

A)   7.7 * 10¯43 J
B)   2.3* 10¯34 J
C)   5.7 * 10¯25 J
D)   1.7 * 10¯16 J
E)   > 10¯15 JF) A) and D)
G) B) and E)

Question 8

The FM station KDUL broadcasts music at 99.1 MHz. Find the wavelength of these waves.

Accepted Answer

A)   1.88 * 10¯2 m
B)   0.330 m
C)   3.03 m
D)   5.33 * 102 m
E)   > 103 mF) A) and B)
G) A) and D)

Question 9

What are the possible values for the following quantum numbers in an atom?
A) n
B) l
C) ml

Accepted Answer

a. n = 1, 2, 3, ...

Question 10

Use the Rydberg equation to calculate the frequency of a photon absorbed when the hydrogen atom undergoes a transition from n1 = 2 to n2 = 4. (R = 1.096776 * 107 m¯1)

Accepted Answer

A)   2.056* 106 s¯1
B)   2.742 *106 s¯1
C)   6.165* 1014 s¯1
D)   8.226 * 1014 s¯1
E)   > 1015 s¯1F) A) and E)
G) B) and D)

Question 11

Continuous spectra are characteristic of heated solids.

Accepted Answer

A) True 
 B)False

Question 12

A wave function for an electron is called an atomic orbital.

Accepted Answer

A) True 
 B)False

Question 13

Who proposed the principle which states that one cannot simultaneously know the exact position and velocity of a particle?

Accepted Answer

A)   Einstein
B)   Planck
C)   Heisenberg
D)   Compton
E)   de BroglieF) B) and D)
G) A) and E)

Question 14

Interference of light waves

Accepted Answer

A)   separates light into its component colors.
B)   creates a pattern of light and dark regions.
C)   focuses a broad beam of light into a point.
D)   bends light as it passes the edge of an object.
E)   creates a laser beam.F) B) and D)
G) All of the above

Exam 7: Quantum Theory and Atomic Structure

The Bohr theory of the hydrogen atom predicts the energy difference (in J) between the n= 3 and the n = 5 state to be

Correct Answer
verified

Continuous spectra are characteristic of heated solids.

Correct Answer
verified

Explain the context and meanings of the terms "orbit" and "orbital," making a clear distinction between them.

Correct Answer
verified
Orbit is a term from the Bohr theory, an...
View Answer

Who proposed the principle which states that one cannot simultaneously know the exact position and velocity of a particle?

Correct Answer
verified

Electromagnetic radiation of 500 nm wavelength lies in the ______________ region of the spectrum.

Correct Answer
verified

Atomic orbitals developed using quantum mechanics

Correct Answer
verified

Correct Answer
verified

A radio wave has a frequency of 8.6 * 10⁸ Hz. What is the energy of one photon of this radiation?

Correct Answer
verified

Other factors being constant, a heavy object will have a longer de Broglie wavelength than a light object.

Correct Answer
verified

A wave function for an electron is called an atomic orbital.

Correct Answer
verified

The FM station KDUL broadcasts music at 99.1 MHz. Find the wavelength of these waves.

Correct Answer
verified

Use the Rydberg equation to calculate the frequency of a photon absorbed when the hydrogen atom undergoes a transition from n₁ = 2 to n₂ = 4. (R = 1.096776 * 10⁷ m¯¹)

Correct Answer
verified

Interference of light waves

Correct Answer
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What are the possible values for the following quantum numbers in an atom? A) n B) l C) m_l

Correct Answer
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a. n = 1, 2, 3, ...
View Answer

Exam 7: Quantum Theory and Atomic Structure

The Bohr theory of the hydrogen atom predicts the energy difference (in J) between the n= 3 and the n = 5 state to be

Correct AnswerverifiedShow Answer

Continuous spectra are characteristic of heated solids.

Correct AnswerverifiedShow Answer

Explain the context and meanings of the terms "orbit" and "orbital," making a clear distinction between them.

Correct AnswerverifiedOrbit is a term from the Bohr theory, an...View AnswerShow Answer

Who proposed the principle which states that one cannot simultaneously know the exact position and velocity of a particle?

Correct AnswerverifiedShow Answer

Electromagnetic radiation of 500 nm wavelength lies in the ______________ region of the spectrum.

Correct AnswerverifiedShow Answer

Atomic orbitals developed using quantum mechanics

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

A radio wave has a frequency of 8.6 * 108 Hz. What is the energy of one photon of this radiation?

Correct AnswerverifiedShow Answer

Other factors being constant, a heavy object will have a longer de Broglie wavelength than a light object.

Correct AnswerverifiedShow Answer

A wave function for an electron is called an atomic orbital.

Correct AnswerverifiedShow Answer

The FM station KDUL broadcasts music at 99.1 MHz. Find the wavelength of these waves.

Correct AnswerverifiedShow Answer

Use the Rydberg equation to calculate the frequency of a photon absorbed when the hydrogen atom undergoes a transition from n1 = 2 to n2 = 4. (R = 1.096776 * 107 m¯1)

Correct AnswerverifiedShow Answer

Interference of light waves

Correct AnswerverifiedShow Answer

What are the possible values for the following quantum numbers in an atom? A) n B) l C) ml

Correct Answerverifieda. n = 1, 2, 3, ... View AnswerShow Answer

Correct Answer
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Correct Answer
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Correct Answer
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Orbit is a term from the Bohr theory, an...
View Answer

Correct Answer
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Correct Answer
verified

Correct Answer
verified

Correct Answer
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A radio wave has a frequency of 8.6 * 10⁸ Hz. What is the energy of one photon of this radiation?

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Use the Rydberg equation to calculate the frequency of a photon absorbed when the hydrogen atom undergoes a transition from n₁ = 2 to n₂ = 4. (R = 1.096776 * 10⁷ m¯¹)

Correct Answer
verified

Correct Answer
verified

What are the possible values for the following quantum numbers in an atom? A) n B) l C) m_l

Correct Answer
verified
a. n = 1, 2, 3, ...
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