Question 1

Contact lenses can focus light due to the _______________ of the waves.

Accepted Answer

A)   diffraction
B)   reflection
C)   refraction
D)   dispersion
E)   interferenceF) B) and C)
G) C) and E)

Question 2

An electron in the n = 6 level emits a photon with a wavelength of 410.2 nm. To what energy level does the electron move?

Accepted Answer

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

Question 3

Who was the first scientist to propose that an object could emit only certain amounts of energy?

Accepted Answer

A)   Planck
B)   Einstein
C)   Bohr
D)   Rydberg
E)   de BroglieF) D) and E)
G) C) and D)

Question 4

In the quantum mechanical treatment of the hydrogen atom, which one of the following combinations of quantum numbers is not allowed?

Accepted Answer

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

Question 5

In the photoelectric effect, a photon with an energy of 5.3*10-19 J strikes an electron in a metal. Of this energy, 3.6 *10-19 J is the minimum energy required for the electron to escape from the metal. The remaining energy appears as kinetic energy of the photoelectron. What is the velocity of the photoelectron, assuming it was initially at rest?

Accepted Answer

A)   3.7*1014 m/s
B)   3.7 * 1011 m/s
C)   1.9 * 106 m/s
D)   6.1 * 105 m/s
E)   1.7 * 10-19 m/sF) A) and E)
G) C) and E)

Question 6

In the Bohr model of the hydrogen atom, the electron moves in a circular path which Bohr referred to as an orbital.

Accepted Answer

A) True 
 B)False

Question 7

For potassium metal, the work function  ϕ\phiϕ  (the minimum energy needed to eject an electron from the metal surface)  is 3.68 * 10¯19 J. Which is the longest wavelength of the following which could excite photoelectrons?

Accepted Answer

A)   550. nm
B)   500. nm
C)   450. nm
D)   400. nm
E)   350. nm F) A) and B)
G) B) and D)

Question 8

According to the Rydberg equation, the longest wavelength (in nm)  in the series of H-atom lines with n1 = 3 is

Accepted Answer

A)   1875 nm
B)   1458 nm
C)   820. nm
D)   656 nm
E)   365 nmF) None of the above
G) B) and C)

Question 9

Which word best describes the phenomenon which gives rise to a rainbow?

Accepted Answer

A)   reflection
B)   dispersion
C)   diffraction
D)   interference
E)   deflectionF) A) and B)
G) A) and E)

Question 10

Green light has a wavelength of 5200 Å. Calculate the energy of one photon of green light.

Accepted Answer

A)   3.4 *10¯40 J
B)   3.4 * 10¯30 J
C)   3.8 * 10¯29 J
D)   3.4 * 10¯27 J
E)   3.8 * 10¯19 JF) A) and E)
G) A) and B)

Question 11

The following combinations of quantum numbers are not allowed. Correct each set by changing only one quantum number, and supply an appropriate corrected value.
A) n = 2; l = 2; ml = 2 Corrected: ______ = ______
B) n = 4; l = -2; ml = 0 Corrected: ______ = ______

Accepted Answer

a. n = 3 b...

Question 12

Who was the first scientist to propose that the atom had a dense nucleus which occupied only a small fraction of the volume of the atom?

Accepted Answer

A)   Planck
B)   Bohr
C)   Rydberg
D)   Rutherford
E)   ThomsonF) A) and B)
G) D) and E)

Question 13

Which scientist first proposed that particles of matter could have wave properties?

Accepted Answer

A)   Einstein
B)   Planck
C)   de Broglie
D)   Compton
E)   HeisenbergF) B) and C)
G) B) and D)

Question 14

The size of an atomic orbital is associated with

Accepted Answer

A)   the principal quantum number (n) .
B)   the angular momentum quantum number (l) .
C)   the magnetic quantum number (ml) .
D)   the spin quantum number (ms) .
E)   the angular momentum and magnetic quantum numbers, together.F) A) and D)
G) None of the above

Question 15

The Rydberg equation, giving the wavelengths of lines in the spectrum of the hydrogen atom, was obtained by assuming that energy is quantized.

Accepted Answer

A) True 
 B)False

Question 16

What type of spectrum, if any, would be produced if the light radiated by a heated atomic gas were to be dispersed through a prism?

Accepted Answer

A)   a continuous band of color
B)   a continuous band of color with some dark lines (missing wavelengths) 
C)   only blue light
D)   only red light
E)   discrete lines of different colorsF) B) and D)
G) A) and C)

Question 17

The ionization energy is the energy needed to remove an electron from an atom. In the Bohr model of the hydrogen atom, this means exciting the electron to the n =  ∞\infty∞  state. What is the ionization energy in kJ/mol, for hydrogen atoms initially in the n = 2 energy level?

Accepted Answer

A)   290 kJ/mol
B)   328 kJ/mol
C)   656 kJ/mol
D)   983 kJ/mol
E)   1311 kJ/mol F) All of the above
G) A) and B)

Question 18

Select the arrangement of electromagnetic radiation which starts with the lowest energy and increases to greatest energy.

Accepted Answer

A)   radio, infrared, ultraviolet, gamma rays
B)   radio, ultraviolet, infrared, gamma rays
C)   gamma rays, infrared, radio, ultraviolet
D)   gamma rays, ultraviolet, infrared, radio
E)   infrared, ultraviolet, radio, gamma raysF) A) and E)
G) All of the above

Question 19

According to the Rydberg equation, the line with the shortest wavelength in the emission spectrum of atomic hydrogen is predicted to lie at a wavelength (in nm)  of:

Accepted Answer

A)   91.2 nm
B)   1.10 *10¯2 nm
C)   1.10 * 102 nm
D)   1.10 * 1016 nm
E)   None of these choices is correct.F) A) and E)
G) D) and E)

Question 20

In the quantum mechanical treatment of the hydrogen atom, the functions$ \varPsi$and $ \varPsi$2 both feature prominently. Briefly explain (in principle) how they are obtained and what, if anything, their physical meanings are.

Accepted Answer

The wave function, <img  loading="lazy" src="/assets/images/blured-textbook.svg" class="d-inline m-1" alt="blured image" width="139" height="30">, is a solution to th...

Exam 7: Quantum Theory and Atomic Structure

Which word best describes the phenomenon which gives rise to a rainbow?

Correct Answer
verified

In the quantum mechanical treatment of the hydrogen atom, the functions $\varPsi$ and $\varPsi$ ² both feature prominently. Briefly explain (in principle) how they are obtained and what, if anything, their physical meanings are.

Correct Answer
verified
The wave function, , is a solution to th...
View Answer

Select the arrangement of electromagnetic radiation which starts with the lowest energy and increases to greatest energy.

Correct Answer
verified

Which scientist first proposed that particles of matter could have wave properties?

Correct Answer
verified

An electron in the n = 6 level emits a photon with a wavelength of 410.2 nm. To what energy level does the electron move?

Correct Answer
verified

Who was the first scientist to propose that an object could emit only certain amounts of energy?

Correct Answer
verified

Contact lenses can focus light due to the _______________ of the waves.

Correct Answer
verified

The Rydberg equation, giving the wavelengths of lines in the spectrum of the hydrogen atom, was obtained by assuming that energy is quantized.

Correct Answer
verified

For potassium metal, the work function $\phi$ (the minimum energy needed to eject an electron from the metal surface) is 3.68 * 10¯¹⁹ J. Which is the longest wavelength of the following which could excite photoelectrons?

Correct Answer
verified

The following combinations of quantum numbers are not allowed. Correct each set by changing only one quantum number, and supply an appropriate corrected value. A) n = 2; l = 2; m_l = 2 Corrected: = B) n = 4; l = -2; m_l = 0 Corrected: =

Correct Answer
verified
a. n = 3 b...
View Answer

In the quantum mechanical treatment of the hydrogen atom, which one of the following combinations of quantum numbers is not allowed?

Correct Answer
verified

According to the Rydberg equation, the line with the shortest wavelength in the emission spectrum of atomic hydrogen is predicted to lie at a wavelength (in nm) of:

Correct Answer
verified

What type of spectrum, if any, would be produced if the light radiated by a heated atomic gas were to be dispersed through a prism?

Correct Answer
verified

Correct Answer
verified

Green light has a wavelength of 5200 Å. Calculate the energy of one photon of green light.

Correct Answer
verified

In the Bohr model of the hydrogen atom, the electron moves in a circular path which Bohr referred to as an orbital.

Correct Answer
verified

Who was the first scientist to propose that the atom had a dense nucleus which occupied only a small fraction of the volume of the atom?

Correct Answer
verified

The size of an atomic orbital is associated with

Correct Answer
verified

According to the Rydberg equation, the longest wavelength (in nm) in the series of H-atom lines with n₁ = 3 is

Correct Answer
verified

The ionization energy is the energy needed to remove an electron from an atom. In the Bohr model of the hydrogen atom, this means exciting the electron to the n = $\infty$ state. What is the ionization energy in kJ/mol, for hydrogen atoms initially in the n = 2 energy level?

Correct Answer
verified

Exam 7: Quantum Theory and Atomic Structure

Which word best describes the phenomenon which gives rise to a rainbow?

Correct AnswerverifiedShow Answer

In the quantum mechanical treatment of the hydrogen atom, the functions Ψ \varPsiΨ and Ψ \varPsiΨ 2 both feature prominently. Briefly explain (in principle) how they are obtained and what, if anything, their physical meanings are.

Correct AnswerverifiedThe wave function, , is a solution to th...View AnswerShow Answer

Select the arrangement of electromagnetic radiation which starts with the lowest energy and increases to greatest energy.

Correct AnswerverifiedShow Answer

Which scientist first proposed that particles of matter could have wave properties?

Correct AnswerverifiedShow Answer

An electron in the n = 6 level emits a photon with a wavelength of 410.2 nm. To what energy level does the electron move?

Correct AnswerverifiedShow Answer

Who was the first scientist to propose that an object could emit only certain amounts of energy?

Correct AnswerverifiedShow Answer

Contact lenses can focus light due to the _______________ of the waves.

Correct AnswerverifiedShow Answer

The Rydberg equation, giving the wavelengths of lines in the spectrum of the hydrogen atom, was obtained by assuming that energy is quantized.

Correct AnswerverifiedShow Answer

For potassium metal, the work function ϕ\phiϕ (the minimum energy needed to eject an electron from the metal surface) is 3.68 * 10¯19 J. Which is the longest wavelength of the following which could excite photoelectrons?

Correct AnswerverifiedShow Answer

The following combinations of quantum numbers are not allowed. Correct each set by changing only one quantum number, and supply an appropriate corrected value. A) n = 2; l = 2; ml = 2 Corrected: ______ = ______ B) n = 4; l = -2; ml = 0 Corrected: ______ = ______

Correct Answerverifieda. n = 3 b...View AnswerShow Answer

In the quantum mechanical treatment of the hydrogen atom, which one of the following combinations of quantum numbers is not allowed?

Correct AnswerverifiedShow Answer

According to the Rydberg equation, the line with the shortest wavelength in the emission spectrum of atomic hydrogen is predicted to lie at a wavelength (in nm) of:

Correct AnswerverifiedShow Answer

What type of spectrum, if any, would be produced if the light radiated by a heated atomic gas were to be dispersed through a prism?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Green light has a wavelength of 5200 Å. Calculate the energy of one photon of green light.

Correct AnswerverifiedShow Answer

In the Bohr model of the hydrogen atom, the electron moves in a circular path which Bohr referred to as an orbital.

Correct AnswerverifiedShow Answer

Who was the first scientist to propose that the atom had a dense nucleus which occupied only a small fraction of the volume of the atom?

Correct AnswerverifiedShow Answer

The size of an atomic orbital is associated with

Correct AnswerverifiedShow Answer

According to the Rydberg equation, the longest wavelength (in nm) in the series of H-atom lines with n1 = 3 is

Correct AnswerverifiedShow Answer

The ionization energy is the energy needed to remove an electron from an atom. In the Bohr model of the hydrogen atom, this means exciting the electron to the n = ∞\infty∞ state. What is the ionization energy in kJ/mol, for hydrogen atoms initially in the n = 2 energy level?

Correct AnswerverifiedShow Answer

Correct Answer
verified

In the quantum mechanical treatment of the hydrogen atom, the functions $\varPsi$ and $\varPsi$ ² both feature prominently. Briefly explain (in principle) how they are obtained and what, if anything, their physical meanings are.

Correct Answer
verified
The wave function, , is a solution to th...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

For potassium metal, the work function $\phi$ (the minimum energy needed to eject an electron from the metal surface) is 3.68 * 10¯¹⁹ J. Which is the longest wavelength of the following which could excite photoelectrons?

Correct Answer
verified

The following combinations of quantum numbers are not allowed. Correct each set by changing only one quantum number, and supply an appropriate corrected value. A) n = 2; l = 2; m_l = 2 Corrected: = B) n = 4; l = -2; m_l = 0 Corrected: =

Correct Answer
verified
a. n = 3 b...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
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Correct Answer
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Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

According to the Rydberg equation, the longest wavelength (in nm) in the series of H-atom lines with n₁ = 3 is

Correct Answer
verified

The ionization energy is the energy needed to remove an electron from an atom. In the Bohr model of the hydrogen atom, this means exciting the electron to the n = $\infty$ state. What is the ionization energy in kJ/mol, for hydrogen atoms initially in the n = 2 energy level?

Correct Answer
verified