Question 1

Choose the paramagnetic species from below.

Accepted Answer

A)  Ti4+
B)  O
C)  Ar
D)  All of the above are paramagnetic.
E)  None of the above is paramagnetic.F) A) and B)
G) C) and D)

Question 2

Which of the following transitions (in a hydrogen atom) represent absorption of the smallest frequency photon?

Accepted Answer

A)  n = 5 to n = 6
B)  n = 5 to n = 4
C)  n = 4 to n = 1
D)  n = 1 to n = 3
E)  n = 1 to n = 2F) None of the above
G) All of the above

Question 3

Calculate the wavelength of light emitted from a hydrogen atom when an electron undergoes an n = 8 to n = 4 transmission.

Accepted Answer

A)  1940 nm
B)  2620 nm
C)  1.245 × 103 nm
D)  3.178 × 103 nm
E)  714.8 nmF) C) and E)
G) D) and E)

Question 4

Identify the correct values for a 4f sublevel.

Accepted Answer

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

Question 5

Choose the valence orbital diagram that represents the ground state of Sr2+.

Accepted Answer

A)  2+. 
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B)  2+. 
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C)  2+. 
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D)  2+. 
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E)  2+. 
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G) C) and D)

Question 6

Which of the following statements is TRUE?

Accepted Answer

A)  We can sometimes know the exact location and speed of an electron at the same time.
B)  All orbitals in a given atom are roughly the same size.
C)  Since electrons have mass,we must always consider them to have particle properties and never wavelike properties.
D)  Atoms are roughly spherical because when all of the different shaped orbitals are overlapped,they take on a spherical shape.E) B) and C)
F) A) and B)

Question 7

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) A) and B)
G) All of the above

Question 8

What total energy (in kJ) is contained in 1.0 mol of photons,all with a frequency of 2.75 × 1014 Hz?

Accepted Answer

A)  182 kJ
B)  219 kJ
C)  457 kJ
D)  326 kJ
E)  110 kJF) A) and E)
G) B) and E)

Question 9

What are the possible values of l if n = 6?

Accepted Answer

A)  6
B)  0,1,2,3,4,or 5
C)  -4,-3,-2,-1,0,+1,+2,+3,or +4
D)  -5,-4,-3,-2,-1,0,+1,+2,+3,+4,or +5E) None of the above
F) A) and B)

Question 10

Describe the shape of a p orbital.

Accepted Answer

A)  a ball
B)  two dumbbells
C)  three dumbbells
D)  four dumbbells
E)  eight dumbbellsF) A) and E)
G) D) and E)

Question 11

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

Accepted Answer

A)  n = 3,l = 1,ml = 1,ms = +  12\frac{1}{2}21​ 
B)  n = 3,l = 0,ml = 1,ms = -  12\frac{1}{2}21​ 
C)  n = 3,l = 2,ml =1 ,ms = +  12\frac{1}{2}21​ 
D)  n = 2,l = 1,ml = 1,ms = -  12\frac{1}{2}21​ 
E)  n = 3,l =2 ,ml = 1,ms = -  12\frac{1}{2}21​F) A) and D)
G) All of the above

Question 12

Give the value of l for a 3p sublevel.

Accepted Answer

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

Question 13

No two electrons can have the same four quantum numbers.What is this known as?

Accepted Answer

A)  Pauli exclusion principle
B)  Hund's rule
C)  aufbau principle
D)  Heisenberg uncertainty principleE) A) and C)
F) C) and D)

Question 14

Calculate the wavelength of an electron (m = 9.11 × 10-28 g) moving at 3.66 × 106 m s-1.

Accepted Answer

A)  1.99 × 10-10 m
B)  5.03 × 10-10 m
C)  1.81 × 10-10 m
D)  5.52 × 10-9 m
E)  2.76 × 10-9 mF) D) and E)
G) B) and E)

Question 15

Which of the following visible colours of light has the longest wavelength?

Accepted Answer

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

Question 16

Determine the shortest frequency of light required to remove an electron from a sample of Ti metal if the binding energy of titanium is 3.14 × 103 kJ mol-1.

Accepted Answer

A)  7.87 × 1015 Hz
B)  4.74 × 1015 Hz
C)  2.11 × 1015 Hz
D)  1.27 × 1015 Hz
E)  6.19 × 1015 HzF) A) and C)
G) A) and D)

Question 17

An electron ends in orbital n = 3 after a hydrogen atom emits a photon with a wavelength of 1093 nm.Calculate the initial orbital,ni.

Accepted Answer

A)  1
B)  5
C)  2
D)  3
E)  6F) A) and E)
G) B) and C)

Question 18

How many sublevels are contained in the second shell (n = 2) of a given atom?

Accepted Answer

A)  1
B)  2
C)  9
D)  4
E)  3F) D) and E)
G) A) and C)

Question 19

Give the number of valence electrons for Mg2+.

Accepted Answer

Question 20

Choose the valence orbital diagram that represents the ground state of Zn.

Accepted Answer

A)  
B)  
C)  
D)  
E)  F) All of the above
G) B) and C)

Exam 7: The Quantum-Mechanical Model of the Atom

An electron ends in orbital n = 3 after a hydrogen atom emits a photon with a wavelength of 1093 nm.Calculate the initial orbital,ni.

Correct AnswerverifiedShow Answer

Give the number of valence electrons for Mg2+.

Correct AnswerverifiedShow Answer

Identify the correct values for a 4f sublevel.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Choose the valence orbital diagram that represents the ground state of Sr2+.

Correct AnswerverifiedShow Answer

Which of the following transitions (in a hydrogen atom) represent absorption of the smallest frequency photon?

Correct AnswerverifiedShow Answer

Determine the shortest frequency of light required to remove an electron from a sample of Ti metal if the binding energy of titanium is 3.14 × 103 kJ mol-1.

Correct AnswerverifiedShow Answer

Describe the shape of a p orbital.

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Calculate the wavelength of an electron (m = 9.11 × 10-28 g) moving at 3.66 × 106 m s-1.

Correct AnswerverifiedShow Answer

Choose the valence orbital diagram that represents the ground state of Zn.

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No two electrons can have the same four quantum numbers.What is this known as?

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What total energy (in kJ) is contained in 1.0 mol of photons,all with a frequency of 2.75 × 1014 Hz?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Choose the paramagnetic species from below.

Correct AnswerverifiedShow Answer

Which of the following visible colours of light has the longest wavelength?

Correct AnswerverifiedShow Answer

Which of the following statements is TRUE?

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Calculate the wavelength of light emitted from a hydrogen atom when an electron undergoes an n = 8 to n = 4 transmission.

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Give the value of l for a 3p sublevel.

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How many sublevels are contained in the second shell (n = 2) of a given atom?

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What are the possible values of l if n = 6?

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An electron ends in orbital n = 3 after a hydrogen atom emits a photon with a wavelength of 1093 nm.Calculate the initial orbital,n_i.

Correct Answer
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Give the number of valence electrons for Mg²⁺.

Correct Answer
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Correct Answer
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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.

Correct Answer
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Choose the valence orbital diagram that represents the ground state of Sr²⁺.

Correct Answer
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Correct Answer
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Determine the shortest frequency of light required to remove an electron from a sample of Ti metal if the binding energy of titanium is 3.14 × 10³ kJ mol^-1.

Correct Answer
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Correct Answer
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Calculate the wavelength of an electron (m = 9.11 × 10^-28 g) moving at 3.66 × 10⁶ m s^-1.

Correct Answer
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What total energy (in kJ) is contained in 1.0 mol of photons,all with a frequency of 2.75 × 10¹⁴ Hz?

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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