Question 1

Match the following.
-neutron

Accepted Answer

A)   γ
B)   p
C)   n
D)   e
E)   HeF)  eG) A) and D)
H) A) and C)

Question 2

Potassium-40 decays to argon-40 with a half-life of 1.27 × 109 yr.The age of a mineral sample that has a mass ratio of 40Ar to 40K of 3.60 is ________ yr.

Accepted Answer

A)  3.53 × 108
B)  3.11 × 108 
C)  4.49 × 108
D)  1.94 × 109
E)  2.80 × 109F) A) and D)
G) A) and C)

Question 3

Fluorine-18 undergoes positron emission with a half-life of 1.10 × 102 minutes.If a patient is given a 248 mg dose for a PET scan,how long will it take for the amount of fluorine-18 to drop to 83 mg? (Assume that none of the fluorine is excreted from the body. )

Accepted Answer

A)  99 minutes
B)  1.74 × 102 minutes
C)  1.32 × 102 minutes
D)  3.00 × 102 minutes
E)  2.11 × 102 minutesF) C) and D)
G) A) and C)

Question 4

Determine the identity of the daughter nuclide from the beta decay of Pb.

Accepted Answer

A)   Pt
B)   Tl
C)   Hg
D)   Bi
E)   PbF) None of the above
G) B) and D)

Question 5

The nuclide As-76 has a half-life of 26.0 hours.If a sample of As-76 weighs 344 g,what mass of As-76 remains after 538 minutes?

Accepted Answer

A)  67.8 g
B)  271 g
C)  144 g
D)  437 g
E)  251 gF) B) and D)
G) A) and D)

Question 6

Explain how radiation increases cancer risk.

Accepted Answer

Radiation increases cancer risk because ...

Question 7

Identify the missing particle in the following nuclear equation: 
Pb →E + ?

Accepted Answer

A)   Bi
B)   Tl
C)   Pb
D)   Pb
E)   TlF) C) and D)
G) A) and D)

Question 8

Determine the identity of the daughter nuclide from the beta decay of Sr.

Accepted Answer

A)   Sr
B)   Y
C)   Y
D)   Kr
E)   SeF) A) and E)
G) B) and D)

Question 9

Identify the missing particle in the following nuclear equation: 
U →Sr + ? +2N + 4Γ

Accepted Answer

A)   Te
B)    Xe
C)    Xe
D)   Te
E)   SrF) A) and C)
G) B) and D)

Question 10

Determine the identity of the daughter nuclide from the positron emission of Ge.

Accepted Answer

A)   Ga
B)   As
C)   Zn
D)   As
E)   GaF) A) and E)
G) D) and E)

Question 11

In addition to a beta particle,what is the other product of beta
 decay of Pb?

Accepted Answer

A)   Hg
B)   Tl
C)   Bi
D)   PoE) A) and B)
F) A) and C)

Question 12

Nuclides above the valley of stability can become more stable through which of the following processes?

Accepted Answer

A)  beta emission
B)  positron emission
C)  alpha emission
D)  electron capture
E)  neutron bombardmentF) A) and C)
G) A) and E)

Question 13

Write the nuclear equation for the alpha decay of Th.

Accepted Answer

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

Question 14

Describe what changes occur during beta decay.

Accepted Answer

A)  The mass number and atomic number decrease.
B)  The mass number and atomic number increase.
C)  The mass number is unchanged and the atomic number decreases.
D)  The mass number is unchanged and the atomic number increases.
E)  The mass number and atomic number do not change.F) A) and D)
G) B) and E)

Question 15

Determine the identity of the daughter nuclide from the alpha decay of Po.

Accepted Answer

A)   Rn
B)   Pb
C)   Ra
D)   Hg
E)   AtF) B) and C)
G) A) and E)

Question 16

Identify the following diagnostic procedure that gives the lowest dose of radiation.

Accepted Answer

A)  dental X-ray - panoramic
B)  upper gastrointestinal tract X-ray
C)  chest X-ray
D)  mammogram
E)  X-ray after barium enemaF) A) and C)
G) C) and D)

Question 17

Identify the symptom that is not from radiation exposure.

Accepted Answer

A)  increased white cell count
B)  increased cancer risk
C)  death
D)  genetic effects
E)  weaker immune systemsF) C) and D)
G) None of the above

Question 18

The age of an ancient tree trunk is estimated using radiocarbon dating.If the trunk has a C-14 decay rate that is 34% of what it is in living plants,how old is the trunk? The half-life of C-14 is 5730 years.

Accepted Answer

A)  2.92 × 104 years
B)  1.94 × 104 years
C)  8.92 × 103 years
D)  5.31 × 103 years
E)  1.74 × 102 yearsF) C) and E)
G) B) and E)

Question 19

Why is an alpha emitter much more harmful if ingested?

Accepted Answer

Alpha emitters have the highes...

Question 20

Determine the identity of the daughter nuclide from the positron emission of F.

Accepted Answer

A)   Na
B)   F
C)   N
D)   O
E)   NeF) B) and E)
G) C) and D)

Exam 19: Radioactivity and Nuclear Chemistry

The age of an ancient tree trunk is estimated using radiocarbon dating.If the trunk has a C-14 decay rate that is 34% of what it is in living plants,how old is the trunk? The half-life of C-14 is 5730 years.

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Write the nuclear equation for the alpha decay of Th.

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Determine the identity of the daughter nuclide from the positron emission of F.

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Why is an alpha emitter much more harmful if ingested?

Correct AnswerverifiedAlpha emitters have the highes...View AnswerShow Answer

Determine the identity of the daughter nuclide from the beta decay of Sr.

Correct AnswerverifiedShow Answer

Nuclides above the valley of stability can become more stable through which of the following processes?

Correct AnswerverifiedShow Answer

Identify the following diagnostic procedure that gives the lowest dose of radiation.

Correct AnswerverifiedShow Answer

Describe what changes occur during beta decay.

Correct AnswerverifiedShow Answer

Identify the missing particle in the following nuclear equation: Pb →E + ?

Correct AnswerverifiedShow Answer

Identify the missing particle in the following nuclear equation: U →Sr + ? +2N + 4Γ

Correct AnswerverifiedShow Answer

Fluorine-18 undergoes positron emission with a half-life of 1.10 × 102 minutes.If a patient is given a 248 mg dose for a PET scan,how long will it take for the amount of fluorine-18 to drop to 83 mg? (Assume that none of the fluorine is excreted from the body. )

Correct AnswerverifiedShow Answer

Match the following. -neutron

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Determine the identity of the daughter nuclide from the positron emission of Ge.

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Determine the identity of the daughter nuclide from the alpha decay of Po.

Correct AnswerverifiedShow Answer

Determine the identity of the daughter nuclide from the beta decay of Pb.

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The nuclide As-76 has a half-life of 26.0 hours.If a sample of As-76 weighs 344 g,what mass of As-76 remains after 538 minutes?

Correct AnswerverifiedShow Answer

Explain how radiation increases cancer risk.

Correct AnswerverifiedRadiation increases cancer risk because ...View AnswerShow Answer

Identify the symptom that is not from radiation exposure.

Correct AnswerverifiedShow Answer

Potassium-40 decays to argon-40 with a half-life of 1.27 × 109 yr.The age of a mineral sample that has a mass ratio of 40Ar to 40K of 3.60 is ________ yr.

Correct AnswerverifiedShow Answer

In addition to a beta particle,what is the other product of beta decay of Pb?

Correct AnswerverifiedShow Answer

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Alpha emitters have the highes...
View Answer

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Fluorine-18 undergoes positron emission with a half-life of 1.10 × 10² minutes.If a patient is given a 248 mg dose for a PET scan,how long will it take for the amount of fluorine-18 to drop to 83 mg? (Assume that none of the fluorine is excreted from the body. )

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Radiation increases cancer risk because ...
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Potassium-40 decays to argon-40 with a half-life of 1.27 × 10⁹ yr.The age of a mineral sample that has a mass ratio of ⁴⁰Ar to ⁴⁰K of 3.60 is ________ yr.

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Correct Answer
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