Question 1

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 numberF) A) and E)
G) A) and C)

Question 2

Identify the ground-state electron configuration for Se2-.

Accepted Answer

A)  [Ar]4s23d104p4
B)  [Ar]4s23d104p2
C)  [Ar]4s24p6
D)  [Ar]4s23d104p6
E)  [Ar]4s23d84p6F) C) and E)
G) C) and D)

Question 3

Give the ground-state electron configuration for Br⁻.

Accepted Answer

A)  [Ar]4s23d104p6
B)  [Ar]4s23d104p5
C)  [Ar]4s24p6
D)  [Ar]4s24d104p6
E)  [Ar]4s23d104p4F) None of the above
G) B) and C)

Question 4

Which ion does not have a noble gas configuration in its ground state?

Accepted Answer

A)  Sc3+
B)  Al3+
C)  Ga3+
D)  As3-E) A) and D)
F) All of the above

Question 5

Calculate the wavelength (in nm) of the red light emitted by a neon sign with a frequency of 4.74 × 1014 Hz.

Accepted Answer

A)  633 nm
B)  158 nm
C)  142 nm
D)  704 nm
E)  466 nmF) A) and E)
G) C) and D)

Question 6

How many different values of ml are possible in the 3d sublevel?

Accepted Answer

A)  2
B)  1
C)  3
D)  5
E)  7F) A) and B)
G) A) and C)

Question 7

Determine the end (final) value of n in a hydrogen atom transition if the electron starts in n = 2 and the atom absorbs a photon of light with a frequency of 4.57 × 1014 Hz.

Accepted Answer

A)  3
B)  1
C)  4
D)  6
E)  7F) B) and E)
G) A) and D)

Question 8

Identify the colour that has a wavelength of 700 nm.

Accepted Answer

A)  blue
B)  green
C)  red
D)  yellowE) A) and D)
F) B) and C)

Question 9

Calculate the final orbital,nf,of an electron in a hydrogen atom that starts at orbital n = 4 and undergoes an energy transition of -1.06 × 10-19 J.

Accepted Answer

A)  3
B)  4
C)  2
D)  5
E)  1F) C) and D)
G) All of the above

Question 10

What are the possible orbitals for n = 3?

Accepted Answer

A)  s,p,d
B)  s,p,d,f
C)  s
D)  s,pE) B) and C)
F) A) and D)

Question 11

Identify the set of four quantum numbers that could represent the last electron added (using the aufbau principle) to the Sr atom.

Accepted Answer

A)  n = 5,l = 0,ml = 0,ms = -  12\frac{1}{2}21​ 
B)  n = 4,l = 1,ml = 1,ms = -  12\frac{1}{2}21​ 
C)  n = 5,l = 1,ml = 0,ms = +  12\frac{1}{2}21​ 
D)  n = 4,l = 1,ml = -1,ms = +  12\frac{1}{2}21​ 
E)  n = 5,l = 1,ml =1 ,ms = -  12\frac{1}{2}21​F) A) and D)
G) A) and E)

Question 12

On the electromagnetic spectrum,visible light is immediately between two other wavelengths.Name them.

Accepted Answer

A)  infrared and X-ray
B)  radio and microwave
C)  gamma ray and ultraviolet
D)  microwave and X-ray
E)  infrared and ultravioletF) A) and E)
G) C) and D)

Question 13

Place the following types of electromagnetic radiation in order of increasing wavelength. ultraviolet light gamma rays radio waves

Accepted Answer

A)  gamma rays 
B)  radio waves 
C)  radio waves 
D)  ultraviolet light 
E)  gamma rays < ultraviolet light < radio wavesF) A) and B)
G) None of the above

Question 14

How much energy (in kJ) do 3.0 moles of photons,all with a wavelength of 655 nm,contain?

Accepted Answer

A)  183 kJ
B)  303 kJ
C)  394 kJ
D)  548 kJ
E)  254 kJF) A) and C)
G) A) and B)

Question 15

How are 3p orbitals different from the 2p orbitals?

Accepted Answer

They are larger in s...

Question 16

Identify the ground-state electron configuration for the ion of Ba.

Accepted Answer

A)  [Kr]5s25p6
B)  [Kr]5s24d105p66s26p2
C)  [Kr]5s24d105p66s1
D)  [Kr]5s24d105p66s2
E)  [Kr]5s24d105p6F) None of the above
G) A) and B)

Question 17

A sunburn is caused by overexposure to ________ radiation.

Accepted Answer

A)  ultraviolet
B)  gamma
C)  microwave
D)  X-ray
E)  radioF) A) and B)
G) B) and E)

Question 18

Give the number of valence electrons for Br-.

Accepted Answer

A)  16
B)  18
C)  6
D)  8
E)  7F) B) and C)
G) B) and E)

Question 19

Calculate the energy of an electron in the orbital n = 5 of a hydrogen atom.

Accepted Answer

A)  -1.08 × 10-19 J
B)  8.72 × 10-20 J
C)  1.08 × 10-19 J
D)  -8.72 × 10-20 J
E)  -7.21 × 10-20 JF) B) and E)
G) C) and D)

Question 20

Identify the set of four quantum numbers that could represent the electron lost to form the Rb ION from the Rb atom.

Accepted Answer

A)  n = 6,l = 0,ml = 0,ms = -  12\frac{1}{2}21​ 
B)  n = 4,l = 1,ml = 1,ms = -  12\frac{1}{2}21​ 
C)  n = 5,l = 1,ml = 0,ms = +  12\frac{1}{2}21​ 
D)  n = 4,l = 1,ml = 0,ms = -  12\frac{1}{2}21​ 
E)  n = 5,l = 0,ml = 0,ms = +  12\frac{1}{2}21​F) A) and E)
G) C) and D)

Exam 7: The Quantum-Mechanical Model of the Atom

What are the possible orbitals for n = 3?

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How much energy (in kJ) do 3.0 moles of photons,all with a wavelength of 655 nm,contain?

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Identify the set of four quantum numbers that could represent the electron lost to form the Rb ION from the Rb atom.

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Give the number of valence electrons for Br-.

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

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A sunburn is caused by overexposure to ________ radiation.

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Place the following types of electromagnetic radiation in order of increasing wavelength. ultraviolet light gamma rays radio waves

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On the electromagnetic spectrum,visible light is immediately between two other wavelengths.Name them.

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Calculate the final orbital,nf,of an electron in a hydrogen atom that starts at orbital n = 4 and undergoes an energy transition of -1.06 × 10-19 J.

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Identify the ground-state electron configuration for the ion of Ba.

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How are 3p orbitals different from the 2p orbitals?

Correct AnswerverifiedThey are larger in s...View AnswerShow Answer

Calculate the wavelength (in nm) of the red light emitted by a neon sign with a frequency of 4.74 × 1014 Hz.

Correct AnswerverifiedShow Answer

Identify the set of four quantum numbers that could represent the last electron added (using the aufbau principle) to the Sr atom.

Correct AnswerverifiedShow Answer

Identify the colour that has a wavelength of 700 nm.

Correct AnswerverifiedShow Answer

Which ion does not have a noble gas configuration in its ground state?

Correct AnswerverifiedShow Answer

How many different values of ml are possible in the 3d sublevel?

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Determine the end (final) value of n in a hydrogen atom transition if the electron starts in n = 2 and the atom absorbs a photon of light with a frequency of 4.57 × 1014 Hz.

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Identify the ground-state electron configuration for Se2-.

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Calculate the energy of an electron in the orbital n = 5 of a hydrogen atom.

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Give the ground-state electron configuration for Br⁻.

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Give the number of valence electrons for Br^-.

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Calculate the final orbital,n_f,of an electron in a hydrogen atom that starts at orbital n = 4 and undergoes an energy transition of -1.06 × 10^-19 J.

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They are larger in s...
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Calculate the wavelength (in nm) of the red light emitted by a neon sign with a frequency of 4.74 × 10¹⁴ Hz.

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How many different values of m_l are possible in the 3d sublevel?

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Determine the end (final) value of n in a hydrogen atom transition if the electron starts in n = 2 and the atom absorbs a photon of light with a frequency of 4.57 × 10¹⁴ Hz.

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Identify the ground-state electron configuration for Se²^-.

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