Question 1

Consider the following adjectives used to describe types of spectrum:
Continuous line atomic emission absorption
How many of them are appropriate to describe the spectrum of radiation absorbed by a sample of mercury vapor?

Accepted Answer

A)  one
B)  two
C)  three
D)  four
E)  fiveF) C) and D)
G) A) and B)

Question 2

Select the arrangement of electromagnetic radiation which starts with the lowest energy and increases to greatest energy.

Accepted Answer

A)  radio,infrared,ultraviolet,gamma rays
B)  radio,ultraviolet,infrared,gamma rays
C)  gamma rays,infrared,radio,ultraviolet
D)  gamma rays,ultraviolet,infrared,radio
E)  infrared,ultraviolet,radio,gamma raysF) C) and D)
G) B) and E)

Question 3

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 4

Consider the following adjectives used to describe types of spectrum:
Continuous line atomic emission absorption
How many of them are appropriate to describe the spectrum of radiation given off by a black body?

Accepted Answer

A)  none
B)  one
C)  two
D)  three
E)  fourF) A) and B)
G) B) and D)

Question 5

Select the arrangement of electromagnetic radiation which starts with the lowest wavelength and increases to greatest wavelength.

Accepted Answer

A)  radio,infrared,ultraviolet,gamma rays
B)  radio,ultraviolet,infrared,gamma rays
C)  gamma rays,radio,ultraviolet,infrared
D)  gamma rays,infrared,radio,ultraviolet
E)  gamma rays,ultraviolet,infrared,radioF) A) and E)
G) A) and C)

Question 6

The shape of an atomic orbital is associated with

Accepted Answer

A)  the principal quantum number (n) .
B)  the angular momentum quantum number (l) .
C)  the magnetic quantum number (ml) .
D)  the spin quantum number (ms) .
E)  the magnetic and spin quantum numbers,together.F) B) and C)
G) D) and E)

Question 7

Which scientist demonstrated that photons transferred momentum during collisions with matter?

Accepted Answer

A)  Bohr
B)  de Broglie
C)  Planck
D)  Compton
E)  BilliardF) B) and E)
G) C) and E)

Question 8

The interference pattern seen when light passes through narrow,closely spaced slits,is due to

Accepted Answer

A)  diffraction.
B)  reflection.
C)  refraction.
D)  dispersion.
E)  deflection.F) C) and E)
G) A) and C)

Question 9

In the Bohr model of the hydrogen atom,the electron moves in a circular path which Bohr referred to as an orbital.

Accepted Answer

A) True 
 B)False

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  ×	imes×  107 m-1)

Accepted Answer

A)  2.056  ×	imes×  106 s-1
B)  2.742  ×	imes×  106 s-1
C)  6.165  ×	imes×  1014 s-1
D)  8.226  ×	imes×  1014 s-1
E)  > 1015 s-1 F) C) and D)
G) A) and E)

Question 11

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

Accepted Answer

A)  7.7  ×	imes×  10-43 J
B)  2.3  ×	imes×  10-34 J
C)  5.7  ×	imes×  10-25 J
D)  1.7  ×	imes×  10-16 J
E)  > 10-15 J F) All of the above
G) A) and B)

Question 12

The de Broglie equation predicts that the wavelength (in m) of a proton moving at 1000.m/s is

Accepted Answer

A)  3.96  ×	imes×  10-10 m
B)  3.96  ×	imes×  10-7 m
C)  2.52  ×	imes×  106 m
D)  2.52  ×	imes×  109 m
E)  > 1010 m F) A) and D)
G) A) and C)

Question 13

According to the Rydberg equation,the line with the shortest wavelength in the emission spectrum of atomic hydrogen is predicted to lie at a wavelength (in nm) of

Accepted Answer

A)  91.2 nm
B)  1.10  ×	imes×  10-2 nm
C)  1.10  ×	imes×  102 nm
D)  1.10  ×	imes×  1016 nm
E)  None of these choices is correct. F) All of the above
G) A) and D)

Question 14

According to the Bohr theory of the hydrogen atom,the minimum energy (in J) needed to ionize a hydrogen atom from the n = 2 state is

Accepted Answer

A)  2.18  ×	imes×  10-18 J
B)  1.64  ×	imes×  10-18 J
C)  5.45  ×	imes×  10-19 J
D)  3.03  ×	imes×  10-19 J
E)  None of these choices is correct. F) C) and D)
G) A) and B)

Question 15

Who developed an empirical equation from which the wavelengths of lines in the spectrum of hydrogen atoms can be calculated?

Accepted Answer

A)  Planck
B)  de Broglie
C)  Bohr
D)  Rutherford
E)  RydbergF) C) and D)
G) None of the above

Question 16

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)  ( γ\gammaγ -ray)  F) A) and E)
G) C) and D)

Question 17

Continuous spectra are characteristic of heated solids.

Accepted Answer

A) True 
 B)False

Question 18

Which scientist first proposed that the electron in the hydrogen atom can have only certain energies?

Accepted Answer

A)  Planck
B)  Einstein
C)  Bohr
D)  Rydberg
E)  HeisenbergF) A) and E)
G) C) and D)

Question 19

An electron in the n = 6 level emits a photon with a wavelength of 410.2 nm.To what energy level does the electron move?

Accepted Answer

A)  n = 1
B)  n = 2
C)  n = 3
D)  n = 4
E)  n = 5F) A) and B)
G) B) and D)

Question 20

Platinum,which is widely used as a catalyst,has a work function  ϕ\phiϕ  (the minimum energy needed to eject an electron from the metal surface) of 9.05  ×	imes×  10-19 J.What is the longest wavelength of light which will cause electrons to be emitted?

Accepted Answer

A)  2.196  ×	imes×  10-7 m
B)  4.553  ×	imes×  10-6 m
C)  5.654  ×	imes×  102 m
D)  1.370  ×	imes×  1015 m
E)  > 106 m F) B) and D)
G) C) and E)

Exam 7: Quantum Theory and Atomic Structure

Which scientist first proposed that the electron in the hydrogen atom can have only certain energies?

Correct AnswerverifiedShow Answer

Platinum,which is widely used as a catalyst,has a work function ϕ\phiϕ (the minimum energy needed to eject an electron from the metal surface) of 9.05 ×\times× 10-19 J.What is the longest wavelength of light which will cause electrons to be emitted?

Correct AnswerverifiedShow Answer

According to the Bohr theory of the hydrogen atom,the minimum energy (in J) needed to ionize a hydrogen atom from the n = 2 state is

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which scientist demonstrated that photons transferred momentum during collisions with matter?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Select the arrangement of electromagnetic radiation which starts with the lowest energy and increases to greatest energy.

Correct AnswerverifiedShow Answer

Consider the following adjectives used to describe types of spectrum: Continuous line atomic emission absorption How many of them are appropriate to describe the spectrum of radiation absorbed by a sample of mercury vapor?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The de Broglie equation predicts that the wavelength (in m) of a proton moving at 1000.m/s is

Correct AnswerverifiedShow Answer

An electron in the n = 6 level emits a photon with a wavelength of 410.2 nm.To what energy level does the electron move?

Correct AnswerverifiedShow Answer

According to the Rydberg equation,the line with the shortest wavelength in the emission spectrum of atomic hydrogen is predicted to lie at a wavelength (in nm) of

Correct AnswerverifiedShow Answer

In the Bohr model of the hydrogen atom,the electron moves in a circular path which Bohr referred to as an orbital.

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 ×\times× 107 m-1)

Correct AnswerverifiedShow Answer

The shape of an atomic orbital is associated with

Correct AnswerverifiedShow Answer

Who developed an empirical equation from which the wavelengths of lines in the spectrum of hydrogen atoms can be calculated?

Correct AnswerverifiedShow Answer

Continuous spectra are characteristic of heated solids.

Correct AnswerverifiedShow Answer

The interference pattern seen when light passes through narrow,closely spaced slits,is due to

Correct AnswerverifiedShow Answer

Select the arrangement of electromagnetic radiation which starts with the lowest wavelength and increases to greatest wavelength.

Correct AnswerverifiedShow Answer

Consider the following adjectives used to describe types of spectrum: Continuous line atomic emission absorption How many of them are appropriate to describe the spectrum of radiation given off by a black body?

Correct AnswerverifiedShow Answer

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Platinum,which is widely used as a catalyst,has a work function $\phi$ (the minimum energy needed to eject an electron from the metal surface) of 9.05 $\times$ 10^-19 J.What is the longest wavelength of light which will cause electrons to be emitted?

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

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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 $\times$ 10⁷ m^-1)

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