Question 1

Choose the ground-state electron configuration for Zr2+.

Accepted Answer

A)  [Kr]5s2
B)  [Kr]5s24d2
C)  [Kr]4d2
D)  [Kr]
E)  [Kr]5s24d4

Question 2

Electromagnetic radiation with a wavelength of 585 nm appears as yellow light to the human eye.The energy of one photon of this light is ________ J.

Accepted Answer

A)  2.94 ×  101810 ^ { 18 }1018 
B)  1.16 × 10-31
C)  1.16 × 10-22
D)  3.40 ×  10−2810 ^ { - 28 }10−28 
E)  3.40 ×  10−1910 ^ { - 19 }10−19

Question 3

Calculate the wavelength of light associated with the transition from n = 1 to n = 3 in the hydrogen atom.

Accepted Answer

A)  103 nm
B)  155 nm
C)  646 nm
D)  971 nm
E)  136 nm

Question 4

How many different values of l are possible in the third principal level?

Accepted Answer

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

Question 5

Choose the paramagnetic species from below.

Accepted Answer

A)  Ca
B)  O2-
C)  Cd2+
D)  Zn
E)  Nb3+

Question 6

Calculate the mass of a pickup truck travelling at 100.0 km h-1 and a de Broglie wavelength of 1.24 × 10-38 m.

Accepted Answer

A)  1924 kg
B)  1134 kg
C)  2347 kg
D)  2841 kg
E)  941.6 kg

Question 7

Calculate the de Broglie wavelength of a pen with a mass of 14.28 g travelling at 16.3 m s-1.

Accepted Answer

A)  1.76 × 10-31 m
B)  6.43 × 10-37 m
C)  2.85 × 10-33 m
D)  8.19 × 10-32 m
E)  5.30 × 10-34 m

Question 8

What is the photoelectric effect?

Accepted Answer

Many metals emit electrons whe...

Question 9

Choose the diamagnetic species from below.

Accepted Answer

A)  Sn2+
B)  Br
C)  P
D)  Cr
E)  None of the above is diamagnetic.

Question 10

Calculate the orbital for the hydrogen atom that contains an electron with an energy of -4.45 × 10-20 J.

Accepted Answer

A)  n = 5
B)  n = 4
C)  n = 1
D)  n = 3
E)  n = 7

Question 11

Electromagnetic radiation with a wavelength of 525 nm appears as green light to the human eye.The frequency of this light is ________  s−1s ^ { - 1 }s−1  .

Accepted Answer

A)  1.75 ×  10−1510 ^ { - 15 }10−15 
B)  5.71 ×  10510 ^ { 5 }105 
C)  1.58 ×  101110 ^ { 11 }1011 
D)  1.58 ×  10210 ^ { 2 }102 
E)  5.71 ×  101410 ^ { 14 }1014

Question 12

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 J

Question 13

Define diffraction.

Accepted Answer

When a wave encounters an obst...

Question 14

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 kJ

Question 15

Calculate the wavelength of light absorbed by a hydrogen atom when an electron undergoes an n = 2 to n = 4 transmission.

Accepted Answer

A)  433.9 nm
B)  410.0 nm
C)  1093 nm
D)  486.0 nm
E)  3295 nm

Question 16

Determine the mass of a ball with a velocity of 35.1 m s-1 and a wavelength of 8.92 × 10-34 m.

Accepted Answer

A)  26.0 g
B)  594 g
C)  2.08 g
D)  47.3 g
E)  21.2 g

Question 17

The element that corresponds to the electron configuration 1s22s22p2 is ________.

Accepted Answer

A)  nitrogen
B)  lithium
C)  hydrogen
D)  phosphorus
E)  carbon

Question 18

Calculate the wavelength (in nm) of the blue light emitted by a mercury lamp with a frequency of 6.88 × 1014 Hz.

Accepted Answer

A)  229 nm
B)  436 nm
C)  206 nm
D)  485 nm
E)  675 nm

Question 19

How many orbitals are there in the fourth shell?

Accepted Answer

A)  3
B)  4
C)  6
D)  16

Question 20

Give all possible values of l for a 3 sublevel.

Accepted Answer

A)  0
B)  1,2
C)  0,1,2
D)  -1,0,1
E)  0,1,2,3

Exam 7: The Quantum-Mechanical Model of the Atom

The element that corresponds to the electron configuration 1s22s22p2 is ________.

Correct AnswerverifiedShow Answer

What is the photoelectric effect?

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

Calculate the orbital for the hydrogen atom that contains an electron with an energy of -4.45 × 10-20 J.

Correct AnswerverifiedShow Answer

Calculate the mass of a pickup truck travelling at 100.0 km h-1 and a de Broglie wavelength of 1.24 × 10-38 m.

Correct AnswerverifiedShow Answer

Calculate the wavelength (in nm) of the blue light emitted by a mercury lamp with a frequency of 6.88 × 1014 Hz.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

How many orbitals are there in the fourth shell?

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Determine the mass of a ball with a velocity of 35.1 m s-1 and a wavelength of 8.92 × 10-34 m.

Correct AnswerverifiedShow Answer

How many different values of l are possible in the third principal level?

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Choose the diamagnetic species from below.

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Calculate the wavelength of light associated with the transition from n = 1 to n = 3 in the hydrogen atom.

Correct AnswerverifiedShow Answer

Calculate the wavelength of light absorbed by a hydrogen atom when an electron undergoes an n = 2 to n = 4 transmission.

Correct AnswerverifiedShow Answer

Define diffraction.

Correct AnswerverifiedWhen a wave encounters an obst...View AnswerShow 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

Choose the ground-state electron configuration for Zr2+.

Correct AnswerverifiedShow Answer

Choose the paramagnetic species from below.

Correct AnswerverifiedShow Answer

Give all possible values of l for a 3 sublevel.

Correct AnswerverifiedShow Answer

Electromagnetic radiation with a wavelength of 585 nm appears as yellow light to the human eye.The energy of one photon of this light is ________ J.

Correct AnswerverifiedShow Answer

Calculate the de Broglie wavelength of a pen with a mass of 14.28 g travelling at 16.3 m s-1.

Correct AnswerverifiedShow Answer

Electromagnetic radiation with a wavelength of 525 nm appears as green light to the human eye.The frequency of this light is ________ s−1s ^ { - 1 }s−1 .

Correct AnswerverifiedShow Answer

The element that corresponds to the electron configuration 1s²2s²2p² is ________.

Correct Answer
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Correct Answer
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Many metals emit electrons whe...
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Calculate the orbital for the hydrogen atom that contains an electron with an energy of -4.45 × 10^-20 J.

Correct Answer
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Calculate the mass of a pickup truck travelling at 100.0 km h^-¹ and a de Broglie wavelength of 1.24 × 10^-38 m.

Correct Answer
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Calculate the wavelength (in nm) of the blue light emitted by a mercury lamp with a frequency of 6.88 × 10¹⁴ Hz.

Correct Answer
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Correct Answer
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Correct Answer
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Determine the mass of a ball with a velocity of 35.1 m s^-1 and a wavelength of 8.92 × 10^-34 m.

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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When a wave encounters an obst...
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Choose the ground-state electron configuration for Zr²⁺.

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Correct Answer
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Calculate the de Broglie wavelength of a pen with a mass of 14.28 g travelling at 16.3 m s^-1.

Correct Answer
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Electromagnetic radiation with a wavelength of 525 nm appears as green light to the human eye.The frequency of this light is ________ $s ^ { - 1 }$ .

Correct Answer
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