Question 1

No alpha decay is observed for isotopes of elements with Z < 83.

Accepted Answer

A) True 
 B)False

Question 2

Fill in missing sub- and superscripts for all particles to complete the following equation for beta decay.

Accepted Answer

The answer of Fill in missing sub- and superscripts for...

Question 3

The isotopes  and  are all stable, while  is radioactive. The mode of decay for  is most likely to be

Accepted Answer

A)   positron decay.
B)   alpha decay.
C)   beta decay.
D)   gamma decay.
E)   fission.F) A) and C)
G) A) and D)

Question 4

A 7.85 *10¯5 mol sample of copper-61 emits 1.47 *1019 positrons in 90.0 minutes. What is the decay constant for copper-61?

Accepted Answer

A)   0.00230 h¯1
B)   0.00346 h¯1
C)   0.207 h¯1
D)   0.311 h¯1
E)   None of these choices is correct.F) A) and D)
G) C) and E)

Question 5

Select the nuclide that completes the following nuclear reaction:

Accepted Answer

A)   
B)   
C)   
D)   
E)   F) B) and C)
G) A) and D)

Question 6

Identify the missing species in the following nuclear transmutation:

Accepted Answer

A)   
B)   
C)   
D)   
E)   F) A) and D)
G) C) and D)

Question 7

The radioisotope  will decay through

Accepted Answer

A)   ( α\alphaα decay.) 
B)   ( β\betaβ  decay.) 
C)   ( γ\gammaγ  decay.) 
D)   positron decay.
E)   electron capture. F) B) and E)
G) B) and C)

Question 8

The radioisotope  will decay through

Accepted Answer

A)   ( α\alphaα decay.) 
B)   ( β\betaβ  decay.) 
C)   positron decay.
D)   electron capture.
E)   ( γ\gammaγ  decay.)  F) B) and E)
G) A) and B)

Question 9

Select the nuclide that completes the following nuclear reaction:

Accepted Answer

A)   
B)   
C)   
D)   
E)   None of these choices is correct.F) C) and D)
G) None of the above

Question 10

Which of the following isotopes is definitely unstable?

Accepted Answer

A)   
B)   
C)   
D)   
E)   F) B) and C)
G) A) and E)

Question 11

The radiochemist, Will I. Glow, studied thorium-232 and found that 2.82 *10¯7 moles emitted 8.42 *106  α\alphaα  particles in one year. What is the decay constant for thorium-232?

Accepted Answer

A)   3.35 * 10¯14 yr¯1
B)   4.96 *10¯11 yr¯1
C)   1.40 * 1010 yr¯1
D)   2.99 * 1013 yr¯1
E)   None of these choices is correct. F) B) and E)
G) A) and E)

Question 12

Which one of the following is a subatomic particle closely related to the positron?

Accepted Answer

A)   proton
B)   electron
C)   negatron
D)   neutron
E)   neutrinoF) A) and E)
G) A) and D)

Question 13

Write a complete, balanced equation to represent the formation of manganese-55 by the beta decay of another nuclide.

Accepted Answer

The answer of Write a complete, balanced equation to represent...

Question 14

The isotope  is unstable. This is predictable because

Accepted Answer

A)   the number of neutrons is too large in relation to the number of protons.
B)   the number of neutrons is too small in relation to the number of protons.
C)   the atomic number is too large.
D)   the mass number is too large.
E)   Sc isotopes are all unstable.F) All of the above
G) B) and D)

Question 15

Write a complete, balanced equation to represent the beta decay of thallium-207.

Accepted Answer

The answer of Write a complete, balanced equation to represent...

Question 16

Positron decay and electron capture have the same net effect on the Z and N values of a nucleus.

Accepted Answer

A) True 
 B)False

Question 17

Gamma rays are not deflected by an electric field.

Accepted Answer

A) True 
 B)False

Question 18

Which one of the following is an incorrect representation of the indicated particle or nucleus?

Accepted Answer

A)   positron: 
B)   neutron: 
C)   helium-3: 
D)   alpha particle: 
E)   proton: F) None of the above
G) A) and B)

Question 19

The (negative) binding energy per nucleon reaches a maximum for the isotope  .

Accepted Answer

A) True 
 B)False

Question 20

Select the nuclide that completes the following nuclear reaction:

Accepted Answer

A)   
B)   
C)   
D)   
E)   F) B) and E)
G) D) and E)

Exam 24: Nuclear Reactions and Their Applications

Which of the following isotopes is definitely unstable?

Correct AnswerverifiedShow Answer

Fill in missing sub- and superscripts for all particles to complete the following equation for beta decay.

Correct AnswerverifiedShow Answer

Positron decay and electron capture have the same net effect on the Z and N values of a nucleus.

Correct AnswerverifiedShow Answer

The radioisotope will decay through

Correct AnswerverifiedShow Answer

Gamma rays are not deflected by an electric field.

Correct AnswerverifiedShow Answer

Write a complete, balanced equation to represent the formation of manganese-55 by the beta decay of another nuclide.

Correct AnswerverifiedShow Answer

Which one of the following is a subatomic particle closely related to the positron?

Correct AnswerverifiedShow Answer

Write a complete, balanced equation to represent the beta decay of thallium-207.

Correct AnswerverifiedShow Answer

No alpha decay is observed for isotopes of elements with Z < 83.

Correct AnswerverifiedShow Answer

The isotope is unstable. This is predictable because

Correct AnswerverifiedShow Answer

The radioisotope will decay through

Correct AnswerverifiedShow Answer

A 7.85 *10¯5 mol sample of copper-61 emits 1.47 *1019 positrons in 90.0 minutes. What is the decay constant for copper-61?

Correct AnswerverifiedShow Answer

The radiochemist, Will I. Glow, studied thorium-232 and found that 2.82 *10¯7 moles emitted 8.42 *106 α\alphaα particles in one year. What is the decay constant for thorium-232?

Correct AnswerverifiedShow Answer

Select the nuclide that completes the following nuclear reaction:

Correct AnswerverifiedShow Answer

Identify the missing species in the following nuclear transmutation:

Correct AnswerverifiedShow Answer

Select the nuclide that completes the following nuclear reaction:

Correct AnswerverifiedShow Answer

The isotopes and are all stable, while is radioactive. The mode of decay for is most likely to be

Correct AnswerverifiedShow Answer

The (negative) binding energy per nucleon reaches a maximum for the isotope .

Correct AnswerverifiedShow Answer

Which one of the following is an incorrect representation of the indicated particle or nucleus?

Correct AnswerverifiedShow Answer

Select the nuclide that completes the following nuclear reaction:

Correct AnswerverifiedShow Answer

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The radioisotope $The radioisotope will decay through A) ( \alpha decay.) B) ( \beta decay.) C) positron decay. D) electron capture. E) ( \gamma decay.)$ will decay through

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The radioisotope $The radioisotope will decay through A) ( \alpha decay.) B) ( \beta decay.) C) ( \gamma decay.) D) positron decay. E) electron capture.$ will decay through

Correct Answer
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A 7.85 10¯⁵ mol sample of copper-61 emits 1.47 10¹⁹ positrons in 90.0 minutes. What is the decay constant for copper-61?

Correct Answer
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The radiochemist, Will I. Glow, studied thorium-232 and found that 2.82 10¯⁷ moles emitted 8.42 10⁶ $\alpha$ particles in one year. What is the decay constant for thorium-232?

Correct Answer
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