Question 1

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-1 E

Question 2

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. A

Question 3

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 relevant

Question 4

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

Accepted Answer

Question 5

________ 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 6

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.

Question 7

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

Accepted Answer

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

Question 8

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

Accepted Answer

A)   0
B)   2
C)   4
D)   5
E)   6

Question 9

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

Accepted Answer

A)   A
B)   B
C)   C
D)   D
E)   E

Question 10

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)   Cl

Question 11

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 J C

Question 12

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.

Question 13

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 cm

Question 14

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 mm

Question 15

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-1

Question 16

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

Accepted Answer

A)   0
B)   1
C)   2
D)   3
E)   4

Question 17

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.

Question 18

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 nm

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)   potassium

Question 20

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]5s24d105p4

Exam 6: Quantum Theory and the Electronic Structure of Atoms

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

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

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

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

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 size of an atomic orbital is associated with

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

The ground-state electron configuration of a calcium atom is

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

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

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

Correct AnswerverifiedShow Answer

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

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

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

Correct AnswerverifiedShow Answer

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

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 Answer
verified
E

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
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A

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

Correct Answer
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The Heisen...
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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? (h = 6.63 × 10^-34 J • s)

Correct Answer
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C

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

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
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