Question 1

Which of the following statements is TRUE?

Accepted Answer

A)   The emission spectrum of a particular element is always the same and can be used to identify the element.
B)   Part of the Bohr model proposed that electrons in the hydrogen atom are located in "stationary states" or particular orbits around the nucleus.
C)   The uncertainty principle states that we can never know both the exact location and speed of an electron.
D)   An orbital is the volume in which we are most likely to find an electron.
E)   All of the above are true.

Question 2

A sunburn is caused by overexposure to ________ radiation.

Accepted Answer

A)   ultraviolet
B)   gamma
C)   microwave
D)   x-ray
E)   radio

Question 3

What is the maximum number of d orbitals that are possible?

Accepted Answer

A)   2
B)   4
C)   8
D)   5
E)   11

Question 4

Which of the following quantum numbers describes the size and energy of an orbital?

Accepted Answer

A)   magnetic quantum number
B)   principal quantum number
C)   angular momentum quantum number
D)   spin quantum number
E)   Schrödinger quantum number

Question 5

Determine the velocity of a marble (m = 8.11 g) with a wavelength of 3.46 × 10-33 m.

Accepted Answer

A)   42.3 m/s
B)   2.36 m/s
C)   23.6 m/s
D)   38.8 m/s
E)   52.9 m/s

Question 6

Identify the correct values for a 1s orbital.

Accepted Answer

A)   n = 3, l = 1, ml = +1
B)   n = 2, l = 1, ml = 0
C)   n = 1, l = 0, ml = 0
D)   n = 2, l = 0, ml = -1
E)   n = 4, l = 1, ml = -2

Question 7

Place the following types of electromagnetic radiation in order of increasing wavelength. visible light x-rays microwaves

Accepted Answer

A)   x-rays 
B)   microwaves 
C)   microwaves 
D)   visible light 
E)   x-rays < visible light < microwaves

Question 8

What is the photoelectric effect?

Accepted Answer

Many metals emit electrons whe...

Question 9

Identify the correct values for a 4f orbital.

Accepted Answer

A)   n = 3, l = 2, ml = 1
B)   n = 2, l = 1, ml = 1
C)   n = 1, l = 0, ml = 0
D)   n = 2, l = 0, ml = 0
E)   n = 4, l = 3, ml = -2

Question 10

Which of the following quantum numbers describes the shape of an orbital?

Accepted Answer

A)   principal quantum number
B)   magnetic quantum number
C)   spin quantum number
D)   Schrödinger quantum number
E)   angular momentum quantum number

Question 11

Electromagnetic radiation with a wavelength of 575 nm appears as yellow light to the human eye.The energy of one photon of this light is 3.46 × 10-19 J.Thus,a laser that emits 1.3 × 10-2 J of energy in a pulse of light at this wavelength produces ________ photons in each pulse.

Accepted Answer

A)   2.7 × 10-17
B)   7.8 × 10-24
C)   2.2 × 1019
D)   3.8 × 1016
E)   6.5 × 1013

Question 12

For hydrogen,what is the wavelength of the photon emitted when an electron drops from a 4p orbital to a 2s orbital in a hydrogen atom? The Rydberg constant is 1.097 × 10-2 nm-1.

Accepted Answer

A)   656.3 nm
B)   486.2 nm
C)   364.6 nm
D)   2.057 × 10-3 nm

Question 13

Identify the color of a flame test for potassium.

Accepted Answer

A)   violet
B)   red
C)   white
D)   yellow
E)   blue

Question 14

How many orbitals are contained in the third principal level (n = 3) of a given atom?

Accepted Answer

A)   9
B)   1
C)   12
D)   6
E)   10

Question 15

Identify the orbital. z orbital B)  dxy orbital C)  px orbital D)  dyz orbital E)  py orbital" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)   pz orbital
B)   dxy orbital
C)   px orbital
D)   dyz orbital
E)   py orbital

Question 16

How many different values of ml are possible in the 4d sublevel?

Accepted Answer

A)   2
B)   0
C)   3
D)   5
E)   6

Question 17

Which of the following transitions (in a hydrogen atom) represent emission of the longest wavelength photon?

Accepted Answer

A)   n = 1 to n = 3
B)   n = 3 to n = 2
C)   n = 3 to n = 4
D)   n = 5 to n = 2
E)   n = 5 to n = 4

Question 18

How many different values of ml are possible in the 5f sublevel?

Accepted Answer

A)   1
B)   7
C)   4
D)   5
E)   2

Question 19

In which orbital below would an electron (on average) be closest to the nucleus?

Accepted Answer

A)   4f
B)   4s
C)   2s
D)   5d
E)   5p

Question 20

Identify the correct values for a 3p orbital.

Accepted Answer

A)   n = 3, l = 1, ml = 0
B)   n = 2, l = 1, ml = 0
C)   n = 1, l = 0, ml = 0
D)   n = 2, l = 0, ml = 0
E)   n = 4, l = -1, ml = +1

Exam 7: The Quantum-Mechanical Model of the Atom

What is the photoelectric effect?

Correct AnswerverifiedMany metals emit electrons whe...View AnswerShow Answer

Which of the following statements is TRUE?

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Which of the following quantum numbers describes the shape of an orbital?

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How many different values of ml are possible in the 5f sublevel?

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Identify the orbital.

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Identify the correct values for a 4f orbital.

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For hydrogen,what is the wavelength of the photon emitted when an electron drops from a 4p orbital to a 2s orbital in a hydrogen atom? The Rydberg constant is 1.097 × 10-2 nm-1.

Correct AnswerverifiedShow Answer

Identify the color of a flame test for potassium.

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Identify the correct values for a 3p orbital.

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How many orbitals are contained in the third principal level (n = 3) of a given atom?

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Which of the following transitions (in a hydrogen atom) represent emission of the longest wavelength photon?

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In which orbital below would an electron (on average) be closest to the nucleus?

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Place the following types of electromagnetic radiation in order of increasing wavelength. visible light x-rays microwaves

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A sunburn is caused by overexposure to ________ radiation.

Correct AnswerverifiedShow Answer

Identify the correct values for a 1s orbital.

Correct AnswerverifiedShow Answer

How many different values of ml are possible in the 4d sublevel?

Correct AnswerverifiedShow Answer

What is the maximum number of d orbitals that are possible?

Correct AnswerverifiedShow Answer

Which of the following quantum numbers describes the size and energy of an orbital?

Correct AnswerverifiedShow Answer

Electromagnetic radiation with a wavelength of 575 nm appears as yellow light to the human eye.The energy of one photon of this light is 3.46 × 10-19 J.Thus,a laser that emits 1.3 × 10-2 J of energy in a pulse of light at this wavelength produces ________ photons in each pulse.

Correct AnswerverifiedShow Answer

Determine the velocity of a marble (m = 8.11 g) with a wavelength of 3.46 × 10-33 m.

Correct AnswerverifiedShow Answer

Correct Answer
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Many metals emit electrons whe...
View Answer

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Correct Answer
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How many different values of m_l are possible in the 5f sublevel?

Correct Answer
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Correct Answer
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Correct Answer
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For hydrogen,what is the wavelength of the photon emitted when an electron drops from a 4p orbital to a 2s orbital in a hydrogen atom? The Rydberg constant is 1.097 × 10^-2 nm^-1.

Correct Answer
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Correct Answer
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Correct Answer
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How many different values of m_l are possible in the 4d sublevel?

Correct Answer
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Electromagnetic radiation with a wavelength of 575 nm appears as yellow light to the human eye.The energy of one photon of this light is 3.46 × 10^-1⁹ J.Thus,a laser that emits 1.3 × 10^-² J of energy in a pulse of light at this wavelength produces ________ photons in each pulse.

Correct Answer
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Determine the velocity of a marble (m = 8.11 g) with a wavelength of 3.46 × 10^-33 m.

Correct Answer
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