Question 1

Which arrangement is in the correct order of increasing radii?

Accepted Answer

A)   Cs 2+ 
B)   Ra +
C)   P 3- 3-
D)   Cr 3+ 
E)   H +F) D) and E)
G) A) and D)

Question 2

Copper forms a cation with a charge of 1+, but the element to the right of it in the periodic table (Zn) forms a cation with a 2+ charge. Use your knowledge of electron configurations to explain this observation.

Accepted Answer

Copper has the electronic conf...

Question 3

Astronomers have detected hydrogen atoms in interstellar space in the n = 732 energy level. Suppose an atom in this excited state emits a photon and undergoes a transition from n = 732 to n = 721. How much energy does the atom lose as a result of this transition? What is the wavelength of the emitted photon? In which spectral region does this radiation lie?

Accepted Answer

1.25  10^-²⁵ J of ...

Question 4

Which arrangement is correct for increasing atomic radius?

Accepted Answer

A)   C 
B)   Rb 
C)   Sc 
D)   Se 
E)   H < HeF) B) and D)
G) A) and C)

Question 5

Which of the following atoms has no unpaired electrons?

Accepted Answer

A)   B
B)   C
C)   O
D)   Mg
E)   NaF) None of the above
G) B) and E)

Question 6

Indicate which metal requires the shortest wavelength photons to eject photoelectrons based on the following graph.

Accepted Answer

A)   a
B)   b
C)   c
D)   dE) A) and C)
F) B) and C)

Question 7

Which of the following photons has the highest frequency?

Accepted Answer

A)   a photon from a Nd:YAG laser with  = 1064 nm
B)   a photon from an Ar+ laser with  = 514.5 nm
C)   a photon from a Kr+ laser with  = 647 nm
D)   a photon from an ArF laser with  = 193 nm
E)   a photon from a He-Ne laser with  = 633 nmF) A) and D)
G) A) and E)

Question 8

Which of the following photons has the highest energy?

Accepted Answer

A)   a photon from a Nd:YAG laser with  = 1064 nm
B)   a photon from an Ar+ laser with  = 514.5 nm
C)   a photon from a Kr+ laser with  = 647 nm
D)   a photon from an ArF laser with  = 193 nm
E)   a photon from a He-Ne laser with  = 633 nmF) C) and D)
G) D) and E)

Question 9

Which of the transitions in the hydrogen atom energy-level diagram shown here is not possible?

Accepted Answer

A)   a
B)   b
C)   c
D)   dE) A) and C)
F) B) and C)

Question 10

What is the energy (E, in J)  of a photon from a microwave oven with a frequency of  = 6.0  1010 Hz?

Accepted Answer

A)   3.98  10-30 J
B)   3.98  10-39 J
C)   3.98  10-23 J
D)   3.98  10-17 J
E)   3.98  10-13 JF) A) and D)
G) C) and D)

Question 11

The emission spectra of Na and Na+ are different because __________

Accepted Answer

A)   Na+ has fewer electrons.
B)   Na has fewer electrons.
C)   Na+ has more protons.
D)   Na has fewer neutrons.
E)   Na has more protons.F) B) and C)
G) All of the above

Question 12

What is the energy (E, in J)  of the photons emitted by an Ar+ laser with a wavelength of  = 488 nm?

Accepted Answer

A)   2.46  1018 J
B)   9.69  10-23 J
C)   1.36  10-36 J
D)   4.07  10-19 J
E)   2.46  10-18 JF) A) and D)
G) C) and E)

Question 13

Arrange the following elements in order of increasing electron affinity: Li, O, Ne, Cl.

Accepted Answer

The answer of Arrange the following elements in order of...

Question 14

How many orbitals exist for the quantum numbers n = 4,  = 1?

Accepted Answer

A)   1
B)   2
C)   3
D)   4
E)   7F) C) and D)
G) B) and C)

Question 15

What is the speed of an argon atom that has a de Broglie wavelength of 5.2 pm?

Accepted Answer

A)   0.52 m/s
B)   5.2  103 m/s
C)   1.9  103 m/s
D)   1.9 m/s
E)   25 m/sF) B) and D)
G) A) and B)

Question 16

Indicate which of the following photons can cause emission of photoelectrons from a surface of gallium ( = 6.7  10-19 J) .

Accepted Answer

A)   350 nm
B)   400 nm
C)   200 nm
D)   650 nm
E)   500 nmF) None of the above
G) A) and D)

Question 17

Atomic spectra are due to the changes in the energy of __________

Accepted Answer

A)   protons.
B)   neutrons.
C)   nuclei.
D)   electrons.
E)   electromagnetic radiation.F) A) and D)
G) B) and E)

Question 18

Which of the following metals would be an appropriate choice for the construction of a photon detector for 550 nm light?

Accepted Answer

A)   sodium ( = 4.4  10-19 J) 
B)   rubidium ( = 3.5  10-19J) 
C)   barium ( = 4.3  10-19 J) 
D)   gold ( = 8.2  10-19 J) 
E)   platinum ( = 9.1  10-19 J) F) B) and C)
G) A) and E)

Question 19

What is the frequency (, in Hz)  of the photons emitted by a He-Ne laser with a wavelength ()  of 632.8 nm?

Accepted Answer

A)   4.738  105 Hz
B)   1.897  102 Hz
C)   1.897  1011 Hz
D)   4.741  1014 Hz
E)   1.897  1014 HzF) B) and E)
G) D) and E)

Question 20

The studies of light emitted by hot objects (Max Planck)  and the photoelectric effect (Albert Einstein)  revolutionized physics because they revealed __________

Accepted Answer

A)   that energy is quantized.
B)   that light intensity does not affect the number of electrons ejected from a metal.
C)   that atomic spectra are due to the quantized transitions of electrons.
D)   that blackbody radiation is continuous.
E)   that atomic spectra are continuous.F) A) and E)
G) B) and E)

Exam 7: Electrons in Atoms and Periodic Properties

What is the energy (E, in J) of a photon from a microwave oven with a frequency of  = 6.0  10¹⁰ Hz?

Correct Answer
verified

Which arrangement is in the correct order of increasing radii?

Correct Answer
verified

Atomic spectra are due to the changes in the energy of __________

Correct Answer
verified

What is the speed of an argon atom that has a de Broglie wavelength of 5.2 pm?

Correct Answer
verified

The studies of light emitted by hot objects (Max Planck) and the photoelectric effect (Albert Einstein) revolutionized physics because they revealed __________

Correct Answer
verified

Which of the following photons has the highest frequency?

Correct Answer
verified

Which of the transitions in the hydrogen atom energy-level diagram shown here is not possible?

Correct Answer
verified

Which of the following metals would be an appropriate choice for the construction of a photon detector for 550 nm light?

Correct Answer
verified

How many orbitals exist for the quantum numbers n = 4, = 1?

Correct Answer
verified

Arrange the following elements in order of increasing electron affinity: Li, O, Ne, Cl.

Correct Answer
verified

Which of the following atoms has no unpaired electrons?

Correct Answer
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What is the frequency (, in Hz) of the photons emitted by a He-Ne laser with a wavelength () of 632.8 nm?

Correct Answer
verified

Which of the following photons has the highest energy?

Correct Answer
verified

Indicate which metal requires the shortest wavelength photons to eject photoelectrons based on the following graph.

Correct Answer
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What is the energy (E, in J) of the photons emitted by an Ar⁺ laser with a wavelength of  = 488 nm?

Correct Answer
verified

Copper forms a cation with a charge of 1+, but the element to the right of it in the periodic table (Zn) forms a cation with a 2+ charge. Use your knowledge of electron configurations to explain this observation.

Correct Answer
verified
Copper has the electronic conf...
View Answer

The emission spectra of Na and Na⁺ are different because __________

Correct Answer
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Which arrangement is correct for increasing atomic radius?

Correct Answer
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Correct Answer
verified
1.25  10^-²⁵ J of ...
View Answer

Indicate which of the following photons can cause emission of photoelectrons from a surface of gallium ( = 6.7  10^-¹⁹ J) .

Correct Answer
verified

Exam 7: Electrons in Atoms and Periodic Properties

What is the energy (E, in J) of a photon from a microwave oven with a frequency of  = 6.0  1010 Hz?

Correct AnswerverifiedShow Answer

Which arrangement is in the correct order of increasing radii?

Correct AnswerverifiedShow Answer

Atomic spectra are due to the changes in the energy of __________

Correct AnswerverifiedShow Answer

What is the speed of an argon atom that has a de Broglie wavelength of 5.2 pm?

Correct AnswerverifiedShow Answer

The studies of light emitted by hot objects (Max Planck) and the photoelectric effect (Albert Einstein) revolutionized physics because they revealed __________

Correct AnswerverifiedShow Answer

Which of the following photons has the highest frequency?

Correct AnswerverifiedShow Answer

Which of the transitions in the hydrogen atom energy-level diagram shown here is not possible?

Correct AnswerverifiedShow Answer

Which of the following metals would be an appropriate choice for the construction of a photon detector for 550 nm light?

Correct AnswerverifiedShow Answer

How many orbitals exist for the quantum numbers n = 4, = 1?

Correct AnswerverifiedShow Answer

Arrange the following elements in order of increasing electron affinity: Li, O, Ne, Cl.

Correct AnswerverifiedShow Answer

Which of the following atoms has no unpaired electrons?

Correct AnswerverifiedShow Answer

What is the frequency (, in Hz) of the photons emitted by a He-Ne laser with a wavelength () of 632.8 nm?

Correct AnswerverifiedShow Answer

Which of the following photons has the highest energy?

Correct AnswerverifiedShow Answer

Indicate which metal requires the shortest wavelength photons to eject photoelectrons based on the following graph.

Correct AnswerverifiedShow Answer

What is the energy (E, in J) of the photons emitted by an Ar+ laser with a wavelength of  = 488 nm?

Correct AnswerverifiedShow Answer

Copper forms a cation with a charge of 1+, but the element to the right of it in the periodic table (Zn) forms a cation with a 2+ charge. Use your knowledge of electron configurations to explain this observation.

Correct AnswerverifiedCopper has the electronic conf...View AnswerShow Answer

The emission spectra of Na and Na+ are different because __________

Correct AnswerverifiedShow Answer

Which arrangement is correct for increasing atomic radius?

Correct AnswerverifiedShow Answer

Correct Answerverified1.25  10-25 J of ...View AnswerShow Answer

Indicate which of the following photons can cause emission of photoelectrons from a surface of gallium ( = 6.7  10-19 J) .

Correct AnswerverifiedShow Answer

What is the energy (E, in J) of a photon from a microwave oven with a frequency of  = 6.0  10¹⁰ Hz?

Correct Answer
verified

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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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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Correct Answer
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What is the energy (E, in J) of the photons emitted by an Ar⁺ laser with a wavelength of  = 488 nm?

Correct Answer
verified

Correct Answer
verified
Copper has the electronic conf...
View Answer

The emission spectra of Na and Na⁺ are different because __________

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
1.25  10^-²⁵ J of ...
View Answer

Indicate which of the following photons can cause emission of photoelectrons from a surface of gallium ( = 6.7  10^-¹⁹ J) .

Correct Answer
verified