Question 1

How many orbitals are there in the n = 4 level of the H-atom?

Accepted Answer

A)   4
B)   6
C)   8
D)   16
E)   18F) A) and B)
G) B) and E)

Question 2

Which element has the following ground-state electron configuration? [Kr]5s24d105p2

Accepted Answer

A)   Sn
B)   Sb
C)   Pb
D)   Ge
E)   TeF) A) and D)
G) C) and E)

Question 3

________ is the quantum number which describes the shape of an atomic orbital.

Accepted Answer

The angula...

Question 4

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

Accepted Answer

A)   phosphorus
B)   nitrogen
C)   arsenic
D)   vanadium
E)   sulfurF) B) and D)
G) B) and C)

Question 5

The solar radiation spectrum peaks at a wavelength of approximately 500 nm. Calculate the energy of one photon of that radiation (c = 3.00 × 108 m/s; h = 6.63 × 10-34 J • s) .

Accepted Answer

A)   4 × 10-10 J
B)   6 × 1014 J
C)   1 × 10-27 J
D)   2 × 10-25 J
E)   4 × 10-19 JF) A) and B)
G) C) and D)

Question 6

The most stable arrangement of electrons in orbitals of equal energy is the one in which the number of electrons with the same spin is maximized is

Accepted Answer

A)   the Pauli exclusion principle.
B)   Bohr's equation.
C)   Hund's rule.
D)   de Broglie's relation.
E)   Dalton's atomic theory.F) All of the above
G) D) and E)

Question 7

For the following equations
a. name the scientist to whom the equation is attributed.
b. in not more than three lines, explain clearly what the equation means or represents.
1. E = nhv
2. λ = h/mu

Accepted Answer

1. a. Planck
b. A blackbody can only emi...

Question 8

What is the total number of electrons that can occupy the 4f orbitals?

Accepted Answer

The answer of What is the total number of electrons...

Question 9

What is the maximum number of electrons in an atom that can have the following set of quantum numbers? n = 4, l = 3, ml = -2, ms = +1/2

Accepted Answer

A)   0
B)   1
C)   2
D)   6
E)   10F) A) and E)
G) C) and E)

Question 10

________ is the number of waves passing through a specific point per second.

Accepted Answer

The answer of ________ is the number of waves passing...

Question 11

How many orbitals are allowed in a subshell if the angular momentum quantum number for electrons in that subshell is 3?

Accepted Answer

A)   1
B)   3
C)   5
D)   7
E)   9F) None of the above
G) A) and E)

Question 12

In which region of the electromagnetic spectrum would radiation of the wavelength λ = 147.3 nm be found?

Accepted Answer

The answer of In which region of the electromagnetic spectrum...

Question 13

Select the correct electron configuration for Cu (Z = 29) .

Accepted Answer

A)   [Ar]4s23d9
B)   [Ar]4s13d10
C)   [Ar]4s24p63d3
D)   [Ar]4s24d9
E)   [Ar]5s24d9F) A) and D)
G) All of the above

Question 14

The de Broglie equation predicts that the wavelength (in m)  of a proton moving at 1000. m/s is ________. (h = 6.63 × 10-34 J • s; mass of a proton = 1.673 × 10-24 g)

Accepted Answer

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

Question 15

Calculate the wavelength, in nanometers, of the light emitted by a hydrogen atom when its electron drops from the n = 7 to the n = 4 principal energy level. Recall that the energy levels of the H atom are given by En = -2.18 × 10-18 J (1/n2) . (c = 3.00 × 108 m/s; h = 6.63 × 10-34 J • s)

Accepted Answer

A)   4.45 × 10-20 nm
B)   2.16 × 10-6 nm
C)   9.18 × 10-20 nm
D)   1.38 × 1014 nm
E)   2.17 × 103 nmF) None of the above
G) B) and C)

Question 16

How many electrons are there in the 3rd principal energy level (n = 3)  of a phosphorus atom?

Accepted Answer

A)   3
B)   5
C)   6
D)   8
E)   10F) B) and D)
G) A) and C)

Question 17

A possible set of quantum numbers for the last electron added to complete an atom of germanium in its ground state is

Accepted Answer

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

Question 18

Which of the following subshells has the highest energy in the element tantalum?

Accepted Answer

A)   4s
B)   4d
C)   5p
D)   4f
E)   6sF) A) and D)
G) A) and C)

Question 19

Select the arrangement of electromagnetic radiation which starts with the shortest wavelength and increases to longest 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) B) and E)
G) All of the above

Question 20

The electron configuration of a ground-state vanadium atom is

Accepted Answer

A)   [Ar]4s24d3.
B)   [Ar]4s24p3.
C)   [Ar]4s23d3.
D)   [Ar]3d5.
E)   [Ar]4s23d7.F) B) and D)
G) B) and E)

Exam 6: Quantum Theory and the Electronic Structure of Atoms

The most stable arrangement of electrons in orbitals of equal energy is the one in which the number of electrons with the same spin is maximized is

Correct AnswerverifiedShow Answer

In which region of the electromagnetic spectrum would radiation of the wavelength λ = 147.3 nm be found?

Correct AnswerverifiedShow Answer

Select the arrangement of electromagnetic radiation which starts with the shortest wavelength and increases to longest wavelength.

Correct AnswerverifiedShow Answer

What is the maximum number of electrons in an atom that can have the following set of quantum numbers? n = 4, l = 3, ml = -2, ms = +1/2

Correct AnswerverifiedShow Answer

________ is the number of waves passing through a specific point per second.

Correct AnswerverifiedShow Answer

How many orbitals are allowed in a subshell if the angular momentum quantum number for electrons in that subshell is 3?

Correct AnswerverifiedShow Answer

A possible set of quantum numbers for the last electron added to complete an atom of germanium in its ground state is

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Which of the following subshells has the highest energy in the element tantalum?

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The solar radiation spectrum peaks at a wavelength of approximately 500 nm. Calculate the energy of one photon of that radiation (c = 3.00 × 108 m/s; h = 6.63 × 10-34 J • s) .

Correct AnswerverifiedShow Answer

For the following equations a. name the scientist to whom the equation is attributed. b. in not more than three lines, explain clearly what the equation means or represents. 1. E = nhv 2. λ = h/mu

Correct Answerverified1. a. Planckb. A blackbody can only emi...View AnswerShow Answer

The de Broglie equation predicts that the wavelength (in m) of a proton moving at 1000. m/s is ________. (h = 6.63 × 10-34 J • s; mass of a proton = 1.673 × 10-24 g)

Correct AnswerverifiedShow Answer

Select the correct electron configuration for Cu (Z = 29) .

Correct AnswerverifiedShow Answer

What is the total number of electrons that can occupy the 4f orbitals?

Correct AnswerverifiedShow Answer

How many orbitals are there in the n = 4 level of the H-atom?

Correct AnswerverifiedShow Answer

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

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Calculate the wavelength, in nanometers, of the light emitted by a hydrogen atom when its electron drops from the n = 7 to the n = 4 principal energy level. Recall that the energy levels of the H atom are given by En = -2.18 × 10-18 J (1/n2) . (c = 3.00 × 108 m/s; h = 6.63 × 10-34 J • s)

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How many electrons are there in the 3rd principal energy level (n = 3) of a phosphorus atom?

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Which element has the following ground-state electron configuration? [Kr]5s24d105p2

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________ is the quantum number which describes the shape of an atomic orbital.

Correct AnswerverifiedThe angula...View AnswerShow Answer

The electron configuration of a ground-state vanadium atom is

Correct AnswerverifiedShow Answer

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What is the maximum number of electrons in an atom that can have the following set of quantum numbers? n = 4, l = 3, m_l = -2, m_s = +1/2

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The solar radiation spectrum peaks at a wavelength of approximately 500 nm. Calculate the energy of one photon of that radiation (c = 3.00 × 10⁸m/s; h = 6.63 × 10^-34 J • s) .

Correct Answer
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Correct Answer
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1. a. Planck
b. A blackbody can only emi...
View Answer

The de Broglie equation predicts that the wavelength (in m) of a proton moving at 1000. m/s is ________. (h = 6.63 × 10^-34 J • s; mass of a proton = 1.673 × 10^-24 g)

Correct Answer
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Calculate the wavelength, in nanometers, of the light emitted by a hydrogen atom when its electron drops from the n = 7 to the n = 4 principal energy level. Recall that the energy levels of the H atom are given by E_n = -2.18 × 10^-18 J (1/n²) . (c = 3.00 × 10⁸m/s; h = 6.63 × 10^-34 J • s)

Correct Answer
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How many electrons are there in the 3^rd principal energy level (n = 3) of a phosphorus atom?

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Which element has the following ground-state electron configuration? [Kr]5s²4d¹⁰5p²

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The angula...
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