Question 1

What is the wavelength of a photon having a frequency of 49.3 THz? (1 THz = 1015 Hz,c = 3.00 × 108 m/s,h = 6.63 × 10-34 J · s)

Accepted Answer

A) ​0.164 nm 
B) ​3.27 × 10-23 nm 
C) ​9.81× 10-15 nm 
D) ​6.08 nm 
E) ​6.09 × 10-3 nm 
A) ​0.164 nm 
B) ​3.27 × 10-23 nm 
C) ​9.81× 10-15 nm 
D) ​6.08 nm 
E) ​6.09 × 10-3 nm

Question 2

Which of the following sets of quantum numbers (n,l,ml, ms)is not permissible?

Accepted Answer

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

Question 3

What is the wavelength of a photon having a frequency of   Hz? (c = 3.00 × 108 m/s,h = 6.63 × 10-34 J · s)

Accepted Answer

A) ​181 nm 
B) ​   nm 
C) ​   nm 
D) ​0.328 nm 
E) ​   nm 
A) ​181 nm 
B) ​   nm 
C) ​   nm 
D) ​0.328 nm 
E) ​   nm

Question 4

What is the frequency of a photon having an energy of 4.91 × 10-17 ? (c = 3.00 × 108 m/s,h = 6.63 × 10-34 J · s)​

Accepted Answer

A) 2.22× 1025 Hz 
B) 4.05× 10-9 Hz 
C) 7.41× 1016 Hz 
D) 4.5× 10-26 Hz 
E) 1.47× 10-8 Hz 
A) 2.22× 1025 Hz 
B) 4.05× 10-9 Hz 
C) 7.41× 1016 Hz 
D) 4.5× 10-26 Hz 
E) 1.47× 10-8 Hz

Question 5

What is the frequency of a photon having a wavelength of 141.8 nm? (c = 3.00 × 108 m/s,h = 6.63 × 10-34 J · s)

Accepted Answer

A) ​2.12 × 10-3 Hz 
B) ​2.14 × 1026 Hz 
C) ​2.12 × 1015 Hz 
D) ​1.4 × 10-36 Hz 
E) ​1.4 × 10-18 Hz 
A) ​2.12 × 10-3 Hz 
B) ​2.14 × 1026 Hz 
C) ​2.12 × 1015 Hz 
D) ​1.4 × 10-36 Hz 
E) ​1.4 × 10-18 Hz

Question 6

Which of the following is a representation of a    orbital?

Accepted Answer

A)    
B)    
C)    
D)    
E)    
A)    
B)    
C)    
D)    
E)

Question 7

Which of the following subshells does not exist?

Accepted Answer

A) 6g 
B) 3f 
C) 3p 
D) 2s 
E) 4d 
A) 6g 
B) 3f 
C) 3p 
D) 2s 
E) 4d

Question 8

How many orbitals have the set of quantum numbers n =4 and l = 2?

Accepted Answer

A) 5 
B) 9 
C) 7 
D) 1 
E) 3 
A) 5 
B) 9 
C) 7 
D) 1 
E) 3

Question 9

In Bohr's atomic theory,when an electron moves from one energy level to another energy level more distant from the nucleus,

Accepted Answer

A) energy is absorbed. 
B) light is emitted. 
C) energy is emitted. 
D) no change in energy occurs. 
E) none of these 
A) energy is absorbed. 
B) light is emitted. 
C) energy is emitted. 
D) no change in energy occurs. 
E) none of these

Question 10

What is the value of the spin quantum number for an electron in a 4d orbital?

Accepted Answer

A) 4 
B) 2 
C) either   or   
D)    
E)    
A) 4 
B) 2 
C) either   or   
D)    
E)

Question 11

What is the wavelength of a 142-g baseball traveling at 90.7 mph? (   )

Accepted Answer

A) 3.13 × 1037 m 
B) 1 × 10-34 m 
C) 1.15 × 10-37 m 
D) 8.68 × 1033m 
E) 3.2 × 10-38m 
A) 3.13 × 1037 m 
B) 1 × 10-34 m 
C) 1.15 × 10-37 m 
D) 8.68 × 1033m 
E) 3.2 × 10-38m

Question 12

Which of the following sets of quantum numbers (n,l,ml, ms)refers to a 3d orbital?

Accepted Answer

A) 2 0 0 -   
B) 5 4 1 -   
C) 4 2 -2 +   
D) 4 3 1 -   
E) 3 2 1 -   
A) 2 0 0 -   
B) 5 4 1 -   
C) 4 2 -2 +   
D) 4 3 1 -   
E) 3 2 1 -

Question 13

The frequency of a radio emission is 7.22 × 1013/s.Determine the wavelength of the radio wave.

Accepted Answer

A) ​4155 nm 
B) ​3096 nm 
C) ​587 nm 
D) ​828 nm 
E) ​1256 nm 
A) ​4155 nm 
B) ​3096 nm 
C) ​587 nm 
D) ​828 nm 
E) ​1256 nm

Question 14

What is the wavelength of light emitted when the electron in a hydrogen atom undergoes a transition from level n = 6 to level n = 2?
(c=3.00×108 m/s,h=6.63×10-34 J·s,RH=2.179×10-18 J)

Accepted Answer

A) ​4×10-7 m 
B) ​1.61×10-27 m 
C) ​2.43×106 m 
D) 4.84×10-19 m 
E) ​7.3×1014 m 
A) ​4×10-7 m 
B) ​1.61×10-27 m 
C) ​2.43×106 m 
D) 4.84×10-19 m 
E) ​7.3×1014 m

Question 15

Whose postulates account for the line spectrum of an atom?

Accepted Answer

A) Thomson 
B) de Broglie 
C) Heisenberg 
D) Rutherford 
E) Bohr 
A) Thomson 
B) de Broglie 
C) Heisenberg 
D) Rutherford 
E) Bohr

Question 16

The contribution for which de Broglie is best remembered in modern science is

Accepted Answer

A) his statement that no electron can have identical values for all four quantum numbers. 
B) his proposal that particles of matter should be associated with wavelike behavior. 
C) his statement that an electron can exist in an atom only in discrete energy levels. 
D) his statement that elements show periodic repetition of properties. 
E) his statement that electrons occupy all the orbitals of a given sublevel singly before pairing begins. 
A) his statement that no electron can have identical values for all four quantum numbers. 
B) his proposal that particles of matter should be associated with wavelike behavior. 
C) his statement that an electron can exist in an atom only in discrete energy levels. 
D) his statement that elements show periodic repetition of properties. 
E) his statement that electrons occupy all the orbitals of a given sublevel singly before pairing begins.

Question 17

What is the wavelength of a photon that has an energy of   J? (c = 3.00 × 108 m/s,h = 6.63 × 10-34 J · s)​

Accepted Answer

A) ​   nm 
B) ​​   nm 
C) ​​0.457 nm 
D) ​​   nm 
E) ​​   nm 
A) ​   nm 
B) ​​   nm 
C) ​​0.457 nm 
D) ​​   nm 
E) ​​   nm

Question 18

How many p orbitals are in the n = 3 shell?

Accepted Answer

A) 1 
B) 6 
C) 0 
D) 5 
E) 3 
A) 1 
B) 6 
C) 0 
D) 5 
E) 3

Question 19

If the x-component of the velocity of an electron can be measured only to a precision of 5 × 10-2 m/s,what is the minimum uncertainty of the position of the electron in the x-direction? (

Accepted Answer

A) 9.5 × 1032 m 
B) 1 × 10-3 m 
C) 1.1 × 10-33 m 
D) 8.6 × 102 m 
E) 2 × 101 m 
A) 9.5 × 1032 m 
B) 1 × 10-3 m 
C) 1.1 × 10-33 m 
D) 8.6 × 102 m 
E) 2 × 101 m

Question 20

The angular momentum quantum number is best associated with the

Accepted Answer

A) shape of the orbital. 
B) number of orbitals in a subshell. 
C) energy of the orbital. 
D) orientation in space of an orbital. 
E) none of the above 
A) shape of the orbital. 
B) number of orbitals in a subshell. 
C) energy of the orbital. 
D) orientation in space of an orbital. 
E) none of the above

Exam 7: Quantum Theory of the Atom

What is the wavelength of a photon having a frequency of 49.3 THz? (1 THz = 1015 Hz,c = 3.00 × 108 m/s,h = 6.63 × 10-34 J · s)

Which of the following sets of quantum numbers (n,l,ml, ms)is not permissible?

What is the wavelength of a photon having a frequency of Hz? (c = 3.00 × 108 m/s,h = 6.63 × 10-34 J · s)

What is the frequency of a photon having an energy of 4.91 × 10-17 ? (c = 3.00 × 108 m/s,h = 6.63 × 10-34 J · s)​

What is the frequency of a photon having a wavelength of 141.8 nm? (c = 3.00 × 108 m/s,h = 6.63 × 10-34 J · s)

Which of the following is a representation of a orbital?

Which of the following subshells does not exist?

How many orbitals have the set of quantum numbers n =4 and l = 2?

In Bohr's atomic theory,when an electron moves from one energy level to another energy level more distant from the nucleus,

What is the value of the spin quantum number for an electron in a 4d orbital?

What is the wavelength of a 142-g baseball traveling at 90.7 mph? ( )

Which of the following sets of quantum numbers (n,l,ml, ms)refers to a 3d orbital?

The frequency of a radio emission is 7.22 × 1013/s.Determine the wavelength of the radio wave.

What is the wavelength of light emitted when the electron in a hydrogen atom undergoes a transition from level n = 6 to level n = 2? (c=3.00×108 m/s,h=6.63×10-34 J·s,RH=2.179×10-18 J)

Whose postulates account for the line spectrum of an atom?

The contribution for which de Broglie is best remembered in modern science is

What is the wavelength of a photon that has an energy of J? (c = 3.00 × 108 m/s,h = 6.63 × 10-34 J · s)​

How many p orbitals are in the n = 3 shell?

If the x-component of the velocity of an electron can be measured only to a precision of 5 × 10-2 m/s,what is the minimum uncertainty of the position of the electron in the x-direction? (

The angular momentum quantum number is best associated with the

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Filters

What is the wavelength of a photon having a frequency of 49.3 THz? (1 THz = 10¹⁵ Hz,c = 3.00 × 10⁸ m/s,h = 6.63 × 10^-34 J · s)

Which of the following sets of quantum numbers (n,l,ml_, m_s)is not permissible?

What is the wavelength of a photon having a frequency of Hz? (c = 3.00 × 10⁸ m/s,h = 6.63 × 10^-34 J · s)

What is the frequency of a photon having an energy of 4.91 × 10^-17? (c = 3.00 × 10⁸ m/s,h = 6.63 × 10^-34 J · s)

What is the frequency of a photon having a wavelength of 141.8 nm? (c = 3.00 × 10⁸ m/s,h = 6.63 × 10^-34 J · s)

Which of the following sets of quantum numbers (n,l,ml_, m_s)refers to a 3d orbital?

The frequency of a radio emission is 7.22 × 10¹³/s.Determine the wavelength of the radio wave.

What is the wavelength of light emitted when the electron in a hydrogen atom undergoes a transition from level n = 6 to level n = 2? (c=3.00×10⁸ m/s,h=6.63×10^-34 J·s,R_H=2.179×10^-18 J)

What is the wavelength of a photon that has an energy of J? (c = 3.00 × 10⁸ m/s,h = 6.63 × 10^-34 J · s)

If the x-component of the velocity of an electron can be measured only to a precision of 5 × 10^-2 m/s,what is the minimum uncertainty of the position of the electron in the x-direction? (