Question 1

In the Rydberg equation, for a fixed value of n1, the longest wavelength line has n2 = F1F1F1S1F1F1F10.

Accepted Answer

A) True 
 B)False

Question 2

According to the Rydberg equation, the longest wavelength (in nm)  in the series of H-atom lines with n1 = 3 is

Accepted Answer

A)   1875 nm.
B)   1458 nm.
C)   820. nm.
D)   656 nm.
E)   365 nm.F) B) and E)
G) B) and D)

Question 3

Contact lenses can focus light due to the ____________ of the waves.

Accepted Answer

A)   diffraction
B)   reflection
C)   refraction
D)   dispersion
E)   interferenceF) C) and E)
G) B) and D)

Question 4

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) All of the above
G) A) and C)

Question 5

The energy of a photon is directly proportional to the wavelength of the radiation.

Accepted Answer

A) True 
 B)False

Question 6

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

Accepted Answer

A) True 
 B)False

Question 7

In not more than three lines for each answer, briefly outline one important scientific contribution of each of the following:
a. Planck
b. de Broglie
c. Heisenberg

Accepted Answer

a. Planck is responsible for first propo...

Question 8

Excited hydrogen atoms radiate energy in the

Accepted Answer

A)   infrared region only.
B)   visible region only.
C)   ultraviolet region only.
D)   visible and ultraviolet regions only.
E)   infrared, visible, and ultraviolet regions.F) A) and B)
G) C) and D)

Question 9

The orientation in space 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)   none of the above.F) B) and D)
G) A) and D)

Question 10

An infrared wave has a wavelength of 6.5 × 10-4 cm. What is this distance in angstroms, Å?

Accepted Answer

A)   6.5 × 10-4 Å
B)   2.2 × 10-4 Å
C)   4.6 × 103 Å
D)   6.5 × 104 Å
E)   6.5 × 106 ÅF) D) and E)
G) B) and D)

Question 11

What type of spectrum, if any, would be produced if the light radiated by a heated atomic gas were to be dispersed through a prism?

Accepted Answer

A)   a continuous band of color
B)   a continuous band of color with some dark lines (missing wavelengths) 
C)   only blue light
D)   only red light
E)   discrete lines of different colorsF) B) and D)
G) A) and C)

Question 12

Which of the following is a correct set of quantum numbers for an electron in a 3d orbital?

Accepted Answer

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

Question 13

Line spectra are characteristic of atoms in the gas phase.

Accepted Answer

A) True 
 B)False

Question 14

Which of the following frequencies of electromagnetic radiation has the shortest wavelength?

Accepted Answer

A)   1 kilohertz
B)   1 terahertz
C)   1 dekahertz
D)   1 gigahertz
E)   1 megahertzF) None of the above
G) A) and B)

Question 15

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) D) and E)
G) B) and E)

Question 16

Continuous spectra are characteristic of molecules in the gas phase.

Accepted Answer

A) True 
 B)False

Question 17

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 × 10-18 J.
B)   1.64 × 10-18 J.
C)   5.45 × 10-19 J.
D)   3.03 × 10-19 J.
E)   none of the above.F) B) and C)
G) A) and D)

Question 18

According to the Heisenberg uncertainty principle, if the uncertainty in the speed of an electron is 3.5 × 103 m/s, the uncertainty in its position (in m)  is at least

Accepted Answer

A)   1.7 × 10-8 m.
B)   6.6 × 10-8 m.
C)   17 m.
D)   66 m.
E)   none of the above.F) C) and E)
G) A) and E)

Question 19

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 20

Use the Rydberg equation to calculate the wavelength, in nm, of the least energetic (longest wavelength) line in the visible series (n1 = 2) of the spectrum of atomic hydrogen.

Accepted Answer

Exam 7: Quantum Theory and Atomic Structure

Excited hydrogen atoms radiate energy in the

Correct AnswerverifiedShow Answer

In not more than three lines for each answer, briefly outline one important scientific contribution of each of the following: a. Planck b. de Broglie c. Heisenberg

Correct Answerverifieda. Planck is responsible for first propo...View AnswerShow Answer

Which of the following is a correct set of quantum numbers for an electron in a 3d orbital?

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What type of spectrum, if any, would be produced if the light radiated by a heated atomic gas were to be dispersed through a prism?

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

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According to the Rydberg equation, the longest wavelength (in nm) in the series of H-atom lines with n1 = 3 is

Correct AnswerverifiedShow Answer

According to the Heisenberg uncertainty principle, if the uncertainty in the speed of an electron is 3.5 × 103 m/s, the uncertainty in its position (in m) is at least

Correct AnswerverifiedShow Answer

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

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

The orientation in space of an atomic orbital is associated with

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Which of the following frequencies of electromagnetic radiation has the shortest wavelength?

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

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The energy of a photon is directly proportional to the wavelength of the radiation.

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In the Rydberg equation, for a fixed value of n1, the longest wavelength line has n2 = .

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Line spectra are characteristic of atoms in the gas phase.

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Continuous spectra are characteristic of molecules in the gas phase.

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

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An infrared wave has a wavelength of 6.5 × 10-4 cm. What is this distance in angstroms, Å?

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Contact lenses can focus light due to the ____________ of the waves.

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Use the Rydberg equation to calculate the wavelength, in nm, of the least energetic (longest wavelength) line in the visible series (n1 = 2) of the spectrum of atomic hydrogen.

Correct AnswerverifiedShow Answer

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a. Planck is responsible for first propo...
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According to the Rydberg equation, the longest wavelength (in nm) in the series of H-atom lines with n₁ = 3 is

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According to the Heisenberg uncertainty principle, if the uncertainty in the speed of an electron is 3.5 × 10³ m/s, the uncertainty in its position (in m) is at least

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In the Rydberg equation, for a fixed value of n₁, the longest wavelength line has n₂ = .

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An infrared wave has a wavelength of 6.5 × 10^-4 cm. What is this distance in angstroms, Å?

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Use the Rydberg equation to calculate the wavelength, in nm, of the least energetic (longest wavelength) line in the visible series (n₁ = 2) of the spectrum of atomic hydrogen.

Correct Answer
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