Question 1

How many orbitals are there in the fourth shell?

Accepted Answer

A)  3
B)  4
C)  6
D)  16E) All of the above
F) A) and D)

Question 2

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) B) and C)
G) B) and E)

Question 3

Which of the following visible colors of light has the shortest wavelength?

Accepted Answer

A)  blue
B)  violet
C)  orange
D)  green
E)  yellowF) A) and E)
G) C) and D)

Question 4

How much energy,in kJ,is required to ionize 2.78 moles of hydrogen atoms?

Accepted Answer

A)  2.74 × 103 kJ
B)  4.72 × 103 kJ
C)  1.66 × 103 kJ
D)  3.65 × 103 kJ
E)  5.89 × 103 kJF) A) and C)
G) A) and D)

Question 5

Each of the following sets of quantum numbers is supposed to specify an orbital.Which of the following sets of quantum numbers contains an error?

Accepted Answer

A)  n = 2,l = 1 ,ml = -1
B)  n = 4,l = 2,ml = 0
C)  n = 3,l =3 ,ml = -2
D)  n = 1,l = 0,ml = 0
E)  n = 3,l = 0,ml = 0F) All of the above
G) A) and E)

Question 6

What is the photoelectric effect?

Accepted Answer

Many metals emit electrons whe...

Question 7

Identify the location of the visible range of light.

Accepted Answer

A)  between X-ray and ultraviolet
B)  between microwave and radio
C)  between gamma ray and ultraviolet
D)  between X-ray and gamma ray
E)  between ultraviolet and infraredF) A) and E)
G) B) and E)

Question 8

Calculate the energy of the orange light emitted,per photon,by a neon sign with a frequency of
4.89 × 1014 Hz.

Accepted Answer

A)  3.09 × 10-19 J
B)  6.14 × 10-19 J
C)  3.24 × 10-19 J
D)  1.63 × 10-19 J
E)  5.11 × 10-19 JF) None of the above
G) B) and E)

Question 9

Which of the following visible colors of light has the highest frequency?

Accepted Answer

A)  green
B)  red
C)  blue
D)  yellow
E)  orangeF) A) and C)
G) A) and B)

Question 10

Give the value of l for a 3p sublevel.

Accepted Answer

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

Question 11

Which of the following occurs as the wavelength of a photon increases?

Accepted Answer

A)  The frequency decreases.
B)  The energy increases.
C)  The speed decreases.
D)  Planck's constant decreases.
E)  None of the above occurs as the wavelength of a photon increases.F) D) and E)
G) A) and C)

Question 12

It is possible to determine the ionization energy for hydrogen using the Bohr equation.Calculate the ionization energy (in kJ) for a mole of hydrogen atoms,making the assumption that ionization is the transition from n = 1 to n = ∞.

Accepted Answer

A)  7.62 × 103 kJ
B)  2.76 × 103 kJ
C)  1.31 × 103 kJ
D)  3.62 × 103 kJ
E)  5.33 × 103 kJF) A) and B)
G) B) and D)

Question 13

Which of the following statements are true?

Accepted Answer

A)  The principal quantum number (n) describes the shape of an orbital.
B)  The angular momentum quantum number (l) describes the size and energy associated with an orbital.
C)  The magnetic quantum number (ml) describes the orientation of the orbital.
D)  An orbital is the path that an electron follows during its movement in an atom.
E)  All of the above are true.F) C) and D)
G) B) and D)

Question 14

Choose the transition (in a hydrogen atom) below that represents the absorption of the shortest wavelength photon.

Accepted Answer

A)  n = 1 to n = 2
B)  n = 2 to n = 3
C)  n = 4 to n = 5
D)  n = 6 to n = 3
E)  n = 3 to n = 1F) B) and D)
G) A) and C)

Question 15

Which statement is correct about orbital?

Accepted Answer

A)  An orbital can have maximum two electrons.
B)  A p orbital can have six electrons.
C)  An s orbital has no shape.
D)  All p orbitals have same orientation.E) All of the above
F) C) and D)

Question 16

Calculate the energy change associated with the transition from n = 4 to n = 1 in the hydrogen atom.

Accepted Answer

A)  +4.89 × 10-18 J
B)  +1.64 × 10-18 J
C)  -6.12 × 10-18 J
D)  +3.55 × 10-18 J
E)  -2.04 × 10-18 JF) C) and D)
G) A) and B)

Question 17

Each of the following sets of quantum numbers is supposed to specify an orbital.Choose the one set of quantum numbers that does not contain an error.

Accepted Answer

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

Question 18

Calculate the frequency of the green light emitted by a hydrogen atom with a wavelength of 486.1 nm.

Accepted Answer

A)  1.46 × 1014 s-1
B)  6.86 × 1014 s-1
C)  4.33 × 1014 s-1
D)  6.17 × 1014 s-1
E)  1.62 × 1014 s-1F) None of the above
G) C) and D)

Question 19

In which orbital below would an electron (on average) be farthest from the nucleus?

Accepted Answer

A)  1s
B)  4f
C)  3s
D)  3d
E)  2pF) A) and E)
G) A) and C)

Question 20

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

Accepted Answer

A)  2p
B)  4s
C)  2s
D)  5d
E)  3pF) C) and E)
G) B) and C)

Exam 7: The Quantum-Mechanical Model of the Atom

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

Correct AnswerverifiedShow Answer

It is possible to determine the ionization energy for hydrogen using the Bohr equation.Calculate the ionization energy (in kJ) for a mole of hydrogen atoms,making the assumption that ionization is the transition from n = 1 to n = ∞.

Correct AnswerverifiedShow Answer

Give the value of l for a 3p sublevel.

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In which orbital below would an electron (on average) be farthest from the nucleus?

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Identify the location of the visible range of light.

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Calculate the frequency of the green light emitted by a hydrogen atom with a wavelength of 486.1 nm.

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Each of the following sets of quantum numbers is supposed to specify an orbital.Choose the one set of quantum numbers that does not contain an error.

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Which of the following occurs as the wavelength of a photon increases?

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Choose the transition (in a hydrogen atom) below that represents the absorption of the shortest wavelength photon.

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Calculate the energy change associated with the transition from n = 4 to n = 1 in the hydrogen atom.

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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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How much energy,in kJ,is required to ionize 2.78 moles of hydrogen atoms?

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How many orbitals are there in the fourth shell?

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Which of the following visible colors of light has the shortest wavelength?

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Calculate the energy of the orange light emitted,per photon,by a neon sign with a frequency of 4.89 × 1014 Hz.

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Which statement is correct about orbital?

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Each of the following sets of quantum numbers is supposed to specify an orbital.Which of the following sets of quantum numbers contains an error?

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What is the photoelectric effect?

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

Which of the following statements are true?

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Which of the following visible colors of light has the highest frequency?

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Calculate the energy of the orange light emitted,per photon,by a neon sign with a frequency of 4.89 × 10¹⁴Hz.

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Many metals emit electrons whe...
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