Question 1

a. Calculate the wavelength in nm of a photon whose energy is 6.00 × 10-19 J.
b. Would the photon in (a) have enough energy to ionize a hydrogen atom in its ground state (i.e., to separate the proton and electron completely)? Use the Bohr equation to explain your answer.

Accepted Answer

a. 331 nm
b. No. 2.18 × 10^-18 J i...

Question 2

For the following equations
a. name the scientist to whom the equation is attributed.
b. in not more than three lines, explain clearly what the equation means or represents.
1. E = nhF1F1F1S1F1F1F10
2. F1F1F1S1F1F1F10 = h/mu
3. HF1F1F1S1F1F1F10 = EF1F1F1S1F1F1F10
4. F1F1F1S1F1F1F10xF1F1F1S1F1F1F10mF1F1F1S1F1F1F10u F1F1F1S1F1F1F10 h/4F1F1F1S1F1F1F10
5. Ephoton = hF1F1F1S1F1F1F10

Accepted Answer

1. a. Planck
b. A black body can only em...

Question 3

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 the above.F) B) and D)
G) D) and E)

Question 4

The shape 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 magnetic and spin quantum numbers, together.F) C) and D)
G) A) and B)

Question 5

Who proposed a model that successfully explained the photoelectric effect?

Accepted Answer

A)   Planck
B)   Einstein
C)   Compton
D)   Rydberg
E)   BohrF) A) and E)
G) C) and E) B

Question 6

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 =  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/molF) C) and D)
G) A) and E) B

Question 7

Interference of light waves

Accepted Answer

A)   separates light into its component colors.
B)   creates a pattern of light and dark regions.
C)   focuses a broad beam of light into a point.
D)   bends light as it passes the edge of an object.
E)   creates a laser beam.F) A) and E)
G) B) and E)

Question 8

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

Accepted Answer

A)   reflection
B)   dispersion
C)   diffraction
D)   interference
E)   deflectionF) D) and E)
G) None of the above

Question 9

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

Accepted Answer

A)   radio, infrared, ultraviolet, gamma rays
B)   radio, ultraviolet, infrared, gamma rays
C)   gamma rays, radio, ultraviolet, infrared
D)   gamma rays, infrared, radio, ultraviolet
E)   gamma rays, ultraviolet, infrared, radioF) C) and D)
G) B) and E)

Question 10

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 11

For the following orbitals, state the values or n, l and ml which apply, and draw a sketch showing the shape and orientation of the orbital.
a. 3s
b. 2px

Accepted Answer

a. 3s: n = 3, l = 0,...

Question 12

A sprinter must average 24.0 mi/h to win a 100-m dash in 9.30 s. What is his wavelength at this speed if his mass is 84.5 kg?

Accepted Answer

A)   7.29 × 10-37 m
B)   3.26 × 10-37 m
C)   5.08 × 10-30 m
D)   1.34 × 10-30 m
E)   none of the aboveF) B) and C)
G) C) and D)

Question 13

a. What is the frequency of microwave radiation which has a wavelength of 10.7 cm?
b. What is the energy of one photon of this radiation?

Accepted Answer

a. 2.80 × 10⁹ s^-1 b. 1.86 × 10^-24 J

Question 14

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) A) and D)
G) B) and D)

Question 15

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) C) and D)
G) A) and B)

Question 16

Line spectra from all regions of the electromagnetic spectrum, including the Paschen series of infrared lines for hydrogen, are used by astronomers to identify elements present in the atmospheres of stars. Calculate the wavelength of the photon emitted when the hydrogen atom undergoes a transition from n = 5 to n = 3. (R = 1.096776 × 107 m-1)

Accepted Answer

A)   205.1 nm
B)   384.6 nm
C)   683.8 nm
D)   1282 nm
E)   > 1500 nmF) A) and B)
G) A) and C)

Question 17

As the frequency of electromagnetic radiation increases, its wavelength also increases.

Accepted Answer

A) True 
 B)False

Question 18

The de Broglie equation predicts that the wavelength (in m)  of a proton moving at 1000. m/s is

Accepted Answer

A)   3.96 × 10-10 m.
B)   3.96 × 10-7 m.
C)   2.52 × 106 m.
D)   2.52 × 109 m.
E)   > 1010 m.F) All of the above
G) A) and E)

Question 19

Electromagnetic radiation of 500 nm wavelength lies in the __________ region of the spectrum.

Accepted Answer

A)   infrared
B)   visible
C)   ultraviolet
D)   X-ray
E)   () -rayF) A) and C)
G) B) and E)

Question 20

Which of the following is a correct set of quantum numbers for an electron in a 5f orbital?

Accepted Answer

A)   n = 5, l = 3, ml = +1
B)   n = 5, l = 2, ml = +3
C)   n = 4, l = 3, ml = 0
D)   n = 4, l = 2, ml = +1
E)   n = 5, l = 4, ml = 3F) B) and E)
G) D) and E)

Exam 7: Quantum Theory and Atomic Structure

a. Calculate the wavelength in nm of a photon whose energy is 6.00 × 10^-19 J. b. Would the photon in (a) have enough energy to ionize a hydrogen atom in its ground state (i.e., to separate the proton and electron completely)? Use the Bohr equation to explain your answer.

Correct Answer
verified
a. 331 nm
b. No. 2.18 × 10^-18 J i...
View Answer

For the following equations a. name the scientist to whom the equation is attributed. b. in not more than three lines, explain clearly what the equation means or represents. 1. E = nh 2.  = h/mu 3. H = E 4. xmu  h/4 5. E_photon = h

Correct Answer
verified
1. a. Planck
b. A black body can only em...
View 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 Answer
verified

The shape of an atomic orbital is associated with

Correct Answer
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Who proposed a model that successfully explained the photoelectric effect?

Correct Answer
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B

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 =  state. What is the ionization energy in kJ/mol, for hydrogen atoms initially in the n = 2 energy level?

Correct Answer
verified
B

Interference of light waves

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

Correct Answer
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Select the arrangement of electromagnetic radiation which starts with the lowest wavelength and increases greatest wavelength.

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 the following orbitals, state the values or n, l and m_l which apply, and draw a sketch showing the shape and orientation of the orbital. a. 3s b. 2p_x

Correct Answer
verified
a. 3s: n = 3, l = 0,...
View Answer

A sprinter must average 24.0 mi/h to win a 100-m dash in 9.30 s. What is his wavelength at this speed if his mass is 84.5 kg?

Correct Answer
verified

a. What is the frequency of microwave radiation which has a wavelength of 10.7 cm? b. What is the energy of one photon of this radiation?

Correct Answer
verified
a. 2.80 × 10⁹ s^-1 b. 1.86 × 10^-24 J

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

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

Correct Answer
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As the frequency of electromagnetic radiation increases, its wavelength also increases.

Correct Answer
verified

The de Broglie equation predicts that the wavelength (in m) of a proton moving at 1000. m/s is

Correct Answer
verified

Electromagnetic radiation of 500 nm wavelength lies in the __________ region of the spectrum.

Correct Answer
verified

Which of the following is a correct set of quantum numbers for an electron in a 5f orbital?

Correct Answer
verified

Exam 7: Quantum Theory and Atomic Structure

a. Calculate the wavelength in nm of a photon whose energy is 6.00 × 10-19 J. b. Would the photon in (a) have enough energy to ionize a hydrogen atom in its ground state (i.e., to separate the proton and electron completely)? Use the Bohr equation to explain your answer.

Correct Answerverifieda. 331 nmb. No. 2.18 × 10-18 J i...View AnswerShow Answer

For the following equations a. name the scientist to whom the equation is attributed. b. in not more than three lines, explain clearly what the equation means or represents. 1. E = nh 2.  = h/mu 3. H = E 4. xmu  h/4 5. Ephoton = h

Correct Answerverified1. a. Planckb. A black body can only em...View AnswerShow 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

The shape of an atomic orbital is associated with

Correct AnswerverifiedShow Answer

Who proposed a model that successfully explained the photoelectric effect?

Correct AnswerverifiedB

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 =  state. What is the ionization energy in kJ/mol, for hydrogen atoms initially in the n = 2 energy level?

Correct AnswerverifiedB

Interference of light waves

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

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 the following orbitals, state the values or n, l and ml which apply, and draw a sketch showing the shape and orientation of the orbital. a. 3s b. 2px

Correct Answerverifieda. 3s: n = 3, l = 0,...View AnswerShow Answer

A sprinter must average 24.0 mi/h to win a 100-m dash in 9.30 s. What is his wavelength at this speed if his mass is 84.5 kg?

Correct AnswerverifiedShow Answer

a. What is the frequency of microwave radiation which has a wavelength of 10.7 cm? b. What is the energy of one photon of this radiation?

Correct Answerverifieda. 2.80 × 109 s-1 b. 1.86 × 10-24 J

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

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

Correct AnswerverifiedShow Answer

As the frequency of electromagnetic radiation increases, its wavelength also increases.

Correct AnswerverifiedShow Answer

The de Broglie equation predicts that the wavelength (in m) of a proton moving at 1000. m/s is

Correct AnswerverifiedShow Answer

Electromagnetic radiation of 500 nm wavelength lies in the __________ region of the spectrum.

Correct AnswerverifiedShow Answer

Which of the following is a correct set of quantum numbers for an electron in a 5f orbital?

Correct AnswerverifiedShow Answer

a. Calculate the wavelength in nm of a photon whose energy is 6.00 × 10^-19 J. b. Would the photon in (a) have enough energy to ionize a hydrogen atom in its ground state (i.e., to separate the proton and electron completely)? Use the Bohr equation to explain your answer.

Correct Answer
verified
a. 331 nm
b. No. 2.18 × 10^-18 J i...
View Answer

For the following equations a. name the scientist to whom the equation is attributed. b. in not more than three lines, explain clearly what the equation means or represents. 1. E = nh 2.  = h/mu 3. H = E 4. xmu  h/4 5. E_photon = h

Correct Answer
verified
1. a. Planck
b. A black body can only em...
View Answer

Correct Answer
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B

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B

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For the following orbitals, state the values or n, l and m_l which apply, and draw a sketch showing the shape and orientation of the orbital. a. 3s b. 2p_x

Correct Answer
verified
a. 3s: n = 3, l = 0,...
View Answer

Correct Answer
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Correct Answer
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a. 2.80 × 10⁹ s^-1 b. 1.86 × 10^-24 J

Correct Answer
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