Question 1

The ________ is the distance between identical points on successive waves.

Accepted Answer

The answer of The ________ is the distance between identical...

Question 2

Which one of the following sets of quantum numbers is not possible?

Accepted Answer

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

Question 3

How many electrons are in the 4p orbitals of vanadium?

Accepted Answer

A)   0
B)   2
C)   4
D)   5
E)   6F) C) and D)
G) None of the above

Question 4

________ is an attempt to locate a subatomic particle acting as a wave even though it is impossible to know both the momentum and position of the particle simultaneously.

Accepted Answer

The Heisen...

Question 5

The ground-state electron configuration of a calcium atom is

Accepted Answer

A)   [Ne]3s2.
B)   [Ne]3s23p6.
C)   [Ar]4s13d1.
D)   [Ar]4s2.
E)   [Ar]3d2.F) D) and E)
G) A) and B)

Question 6

What wavelength, in nm, can strike a metal surface and eject an electron with a kinetic energy of 1.89 × 10-19 J if the binding energy of the metal is 289 kJ/mol?

Accepted Answer

A)   1.89 × 10-19 nm
B)   2.75 nm
C)   189 nm
D)   290 nm
E)   297 nmF) C) and E)
G) A) and C)

Question 7

Which of the following elements has the largest number of unpaired electrons in the ground state?

Accepted Answer

A)   K
B)   V
C)   S
D)   Si
E)   ClF) A) and E)
G) A) and C)

Question 8

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 ________. (mass of an electron = 9.11 × 10-28 g)

Accepted Answer

A)   1.7 × 10-8 m
B)   6.6 × 10-8 m
C)   17 m
D)   66 m
E)   None of these choices is correct.F) None of the above
G) A) and B)

Question 9

A sprinter must average 24.0 mi/h to win a 100-m dash in 9.30 s. What is his de Broglie wavelength at this speed if his mass is 84.5 kg ? (h = 6.63 × 10-34 J • s)

Accepted Answer

A)   7.31 × 10-37 m
B)   3.26 × 10-37 m
C)   5.08 × 10-30 m
D)   1.34 × 10-30 m
E)   None of these choices is correct.F) C) and D)
G) B) and E) A

Question 10

A radio wave has a frequency of 8.6 × 108 Hz. What is the energy of one photon of this radiation? (h = 6.63 × 10-34 J • s)

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) None of the above
G) C) and D) C

Question 11

In the ________ series, nf = 1 and you observe the ultraviolet region of the electromagnetic spectrum.

Accepted Answer

Question 12

A photon has an energy of 5.53 × 10-17 J. What is its frequency in s-1 (h = 6.63 × 10-34 J • s) ?

Accepted Answer

A)   3.66 × 10-50 s-1
B)   1.20 × 10-17 s-1
C)   3.59 × 10-9 s-1 
D)   2.78 × 108 s-1
E)   8.34 × 1016 s-1F) B) and E)
G) C) and D) E

Question 13

The size 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 angular momentum and magnetic quantum numbers, together.F) A) and E)
G) A) and D)

Question 14

Hund's rule states that the most stable arrangement of electrons in orbitals of equal energy is the one in which the number of electrons with parallel spin is ________.

Accepted Answer

A)   minimized
B)   nullified
C)   neutral
D)   maximized
E)   not relevantF) A) and B)
G) A) and C)

Question 15

How many unpaired electrons does a ground-state atom of sulfur have?

Accepted Answer

A)   0
B)   1
C)   2
D)   3
E)   4F) B) and C)
G) A) and B)

Question 16

What is the frequency of electromagnetic radiation with wavelength 532 nm? (c = 3.00 × 108 m/s)

Accepted Answer

A)   5.64 × 1014 s-1
B)   6.48 × 1012 s-1
C)   4.18 × 1018 s-1 
D)   6.23 × 1014 s-1
E)   3.75 × 1015 s-1F) B) and E)
G) B) and D)

Question 17

Calculate the de Broglie wavelength associated with a 20Ne+ ion moving at a velocity of 2.0 × 105 m/s. The atomic mass of Ne-20 is 19.992 amu. (1 amu = 1.66 × 10-24 g and h = 6.63 × 10-34 J • s)

Accepted Answer

A)   1.0 × 10-13 m
B)   1.0 × 10-16 m
C)   1.0 × 10-18 m
D)   9.7 × 1012 m
E)   2.0 × 10-13 cmF) A) and E)
G) A) and D)

Question 18

Select the correct electron configuration for Te (Z = 52) .

Accepted Answer

A)   [Kr]5s25p64d8
B)   [Kr]5s25d105p4
C)   [Kr]5s24d105p6
D)   [Kr]5s24f14
E)   [Kr]5s24d105p4F) A) and E)
G) All of the above

Question 19

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)   potassiumF) All of the above
G) B) and E)

Question 20

Calculate the de Broglie wavelength of a neutron that has a velocity of 200. cm/s. (mass of a neutron = 1.675 × 10-27 kg and h = 6.63 × 10-34 J • s)

Accepted Answer

A)   1.98 × 10-9 m
B)   216 nm
C)   1.8 × 1050 m
D)   198 nm
E)   5.05 mmF) B) and E)
G) A) and B)

Exam 6: Quantum Theory and the Electronic Structure of Atoms

The ________ is the distance between identical points on successive waves.

Correct AnswerverifiedShow Answer

Which one of the following sets of quantum numbers is not possible?

Correct AnswerverifiedShow Answer

How many electrons are in the 4p orbitals of vanadium?

Correct AnswerverifiedShow Answer

________ is an attempt to locate a subatomic particle acting as a wave even though it is impossible to know both the momentum and position of the particle simultaneously.

Correct AnswerverifiedThe Heisen...View AnswerShow Answer

The ground-state electron configuration of a calcium atom is

Correct AnswerverifiedShow Answer

What wavelength, in nm, can strike a metal surface and eject an electron with a kinetic energy of 1.89 × 10-19 J if the binding energy of the metal is 289 kJ/mol?

Correct AnswerverifiedShow Answer

Which of the following elements has the largest number of unpaired electrons in the ground state?

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 ________. (mass of an electron = 9.11 × 10-28 g)

Correct AnswerverifiedShow Answer

A sprinter must average 24.0 mi/h to win a 100-m dash in 9.30 s. What is his de Broglie wavelength at this speed if his mass is 84.5 kg ? (h = 6.63 × 10-34 J • s)

Correct AnswerverifiedA

A radio wave has a frequency of 8.6 × 108 Hz. What is the energy of one photon of this radiation? (h = 6.63 × 10-34 J • s)

Correct AnswerverifiedC

In the ________ series, nf = 1 and you observe the ultraviolet region of the electromagnetic spectrum.

Correct AnswerverifiedShow Answer

A photon has an energy of 5.53 × 10-17 J. What is its frequency in s-1 (h = 6.63 × 10-34 J • s) ?

Correct AnswerverifiedE

The size of an atomic orbital is associated with

Correct AnswerverifiedShow Answer

Hund's rule states that the most stable arrangement of electrons in orbitals of equal energy is the one in which the number of electrons with parallel spin is ________.

Correct AnswerverifiedShow Answer

How many unpaired electrons does a ground-state atom of sulfur have?

Correct AnswerverifiedShow Answer

What is the frequency of electromagnetic radiation with wavelength 532 nm? (c = 3.00 × 108 m/s)

Correct AnswerverifiedShow Answer

Calculate the de Broglie wavelength associated with a 20Ne+ ion moving at a velocity of 2.0 × 105 m/s. The atomic mass of Ne-20 is 19.992 amu. (1 amu = 1.66 × 10-24 g and h = 6.63 × 10-34 J • s)

Correct AnswerverifiedShow Answer

Select the correct electron configuration for Te (Z = 52) .

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Calculate the de Broglie wavelength of a neutron that has a velocity of 200. cm/s. (mass of a neutron = 1.675 × 10-27 kg and h = 6.63 × 10-34 J • s)

Correct AnswerverifiedShow Answer

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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The Heisen...
View Answer

Correct Answer
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What wavelength, in nm, can strike a metal surface and eject an electron with a kinetic energy of 1.89 × 10^-19 J if the binding energy of the metal is 289 kJ/mol?

Correct Answer
verified

Correct Answer
verified

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 ________. (mass of an electron = 9.11 × 10^-28 g)

Correct Answer
verified

A sprinter must average 24.0 mi/h to win a 100-m dash in 9.30 s. What is his de Broglie wavelength at this speed if his mass is 84.5 kg ? (h = 6.63 × 10^-34 J • s)

Correct Answer
verified
A

A radio wave has a frequency of 8.6 × 10⁸ Hz. What is the energy of one photon of this radiation? (h = 6.63 × 10^-34 J • s)

Correct Answer
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C

In the ________ series, n_f= 1 and you observe the ultraviolet region of the electromagnetic spectrum.

Correct Answer
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A photon has an energy of 5.53 × 10^-17 J. What is its frequency in s^-1 (h = 6.63 × 10^-34 J • s) ?

Correct Answer
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E

Correct Answer
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Correct Answer
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Correct Answer
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What is the frequency of electromagnetic radiation with wavelength 532 nm? (c = 3.00 × 10⁸ m/s)

Correct Answer
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Calculate the de Broglie wavelength associated with a ²⁰Ne⁺ ion moving at a velocity of 2.0 × 10⁵ m/s. The atomic mass of Ne-20 is 19.992 amu. (1 amu = 1.66 × 10^-24 g and h = 6.63 × 10^-34 J • s)

Correct Answer
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Correct Answer
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Correct Answer
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Calculate the de Broglie wavelength of a neutron that has a velocity of 200. cm/s. (mass of a neutron = 1.675 × 10^-27 kg and h = 6.63 × 10^-34 J • s)

Correct Answer
verified