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Identify the highest natural radiation.


A) cosmic radiation from outer space
B) terrestrial radiation
C) natural radionuclides in the body
D) a five-hour jet airplane ride
E) radon gas

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Determine the identity of the daughter nuclide from the electron capture by Determine the identity of the daughter nuclide from the electron capture by Pa. A) Th B) Np C) Ac D) U E) Th Pa.


A) Determine the identity of the daughter nuclide from the electron capture by Pa. A) Th B) Np C) Ac D) U E) Th Th
B) Determine the identity of the daughter nuclide from the electron capture by Pa. A) Th B) Np C) Ac D) U E) Th Np
C) Determine the identity of the daughter nuclide from the electron capture by Pa. A) Th B) Np C) Ac D) U E) Th Ac
D) Determine the identity of the daughter nuclide from the electron capture by Pa. A) Th B) Np C) Ac D) U E) Th U
E) Determine the identity of the daughter nuclide from the electron capture by Pa. A) Th B) Np C) Ac D) U E) Th Th

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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.)


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

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Which nuclide below is most likely to decay by electron capture?


A) Which nuclide below is most likely to decay by electron capture? A) Re B) Re C) Re D) Re Re
B) Which nuclide below is most likely to decay by electron capture? A) Re B) Re C) Re D) Re Re
C) Which nuclide below is most likely to decay by electron capture? A) Re B) Re C) Re D) Re Re
D) Which nuclide below is most likely to decay by electron capture? A) Re B) Re C) Re D) Re Re

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Identify the part of the body that can be studied with radiotracers.


A) spleen
B) brain
C) heart
D) tumors
E) all of the above

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Define radioactivity.

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Radioactivity is the emission ...

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Write a nuclear equation to describe the neutron induced fission of Write a nuclear equation to describe the neutron induced fission of Pu to form Kr and Ce.Determine how many neutrons are produced in the reaction. A) 2 B) 0 C) 3 D) 1 E) 4 Pu to form Write a nuclear equation to describe the neutron induced fission of Pu to form Kr and Ce.Determine how many neutrons are produced in the reaction. A) 2 B) 0 C) 3 D) 1 E) 4 Kr and Write a nuclear equation to describe the neutron induced fission of Pu to form Kr and Ce.Determine how many neutrons are produced in the reaction. A) 2 B) 0 C) 3 D) 1 E) 4 Ce.Determine how many neutrons are produced in the reaction.


A) 2
B) 0
C) 3
D) 1
E) 4

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Write a nuclear equation to describe the neutron induced fission of U-235 to form Xe-134 and Sr-100.Determine how many neutrons are produced in the reaction.


A) 4
B) 3
C) 1
D) 0
E) 2

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The following reaction represents what nuclear process? The following reaction represents what nuclear process? Pb → e + Bi A) alpha emission B) gamma capture C) electron capture D) proton capture E) beta emission Pb → The following reaction represents what nuclear process? Pb → e + Bi A) alpha emission B) gamma capture C) electron capture D) proton capture E) beta emission e + The following reaction represents what nuclear process? Pb → e + Bi A) alpha emission B) gamma capture C) electron capture D) proton capture E) beta emission Bi


A) alpha emission
B) gamma capture
C) electron capture
D) proton capture
E) beta emission

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Which of the following nuclides are most likely to decay via positron emission?


A) Na-26
B) I-121
C) Ca-42
D) S-30
E) Sb-122

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


A) dental x-ray - two bitewings
B) upper gastrointestinal tract x-ray
C) barium enema x-ray
D) chest x-ray
E) thallium heart scan

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Define mass defect.


A) the difference in mass between an atom and the sum of its separate components
B) an atom with too many neutrons
C) the difference in mass between a radioactive atom and a nonradioactive atom
D) energy released in a radioactive reaction
E) energy absorbed in a radioactive reaction

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Identify the instrument(s) used to detect radiation.


A) film-badge dosimeter
B) Geiger-Muller counter
C) scintillation counter
D) all of the above
E) none of the above

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Describe what changes occur during gamma ray emission.


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 increases and the atomic number decreases.
E) The mass number and atomic number do not change.

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In a linear accelerator,


A) an uncharged particle is accelerated in an evacuated tube.
B) a similarly alternating voltage is used to accelerate a charged particle.
C) a charged particle is accelerated in an evacuated tube.
D) a single phase voltage is used to accelerate a charged particle.
E) a similarly alternating voltage is used to accelerate an uncharged particle.

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Determine the identity of the daughter nuclide from the positron emission of Determine the identity of the daughter nuclide from the positron emission of N. A) O B) C C) O D) B E) F N.


A) Determine the identity of the daughter nuclide from the positron emission of N. A) O B) C C) O D) B E) F O
B) Determine the identity of the daughter nuclide from the positron emission of N. A) O B) C C) O D) B E) F C
C) Determine the identity of the daughter nuclide from the positron emission of N. A) O B) C C) O D) B E) F O
D) Determine the identity of the daughter nuclide from the positron emission of N. A) O B) C C) O D) B E) F B
E) Determine the identity of the daughter nuclide from the positron emission of N. A) O B) C C) O D) B E) F F

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The half-life of cobalt-60 is 5.20 yr.How many milligrams of a 2.000-mg sample remain after 6.55 years?


A) 0.837
B) 3.23 × 10-15
C) 4.779
D) 1.588
E) 1.163

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Determine the identity of the daughter nuclide from the positron emission of Determine the identity of the daughter nuclide from the positron emission of F. A) Na B) F C) N D) O E) Ne F.


A) Determine the identity of the daughter nuclide from the positron emission of F. A) Na B) F C) N D) O E) Ne Na
B) Determine the identity of the daughter nuclide from the positron emission of F. A) Na B) F C) N D) O E) Ne F
C) Determine the identity of the daughter nuclide from the positron emission of F. A) Na B) F C) N D) O E) Ne N
D) Determine the identity of the daughter nuclide from the positron emission of F. A) Na B) F C) N D) O E) Ne O
E) Determine the identity of the daughter nuclide from the positron emission of F. A) Na B) F C) N D) O E) Ne Ne

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Carbon-11 is used in medical imaging.The half-life of this radioisotope is 20.4 min.What percentage of a sample remains after 60.0 min?


A) 71.2
B) 5.28
C) 13.0
D) 34.0
E) 2.94

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Identify a positron.


A) Identify a positron. A) n B) n C) e D) e E) γ n
B) Identify a positron. A) n B) n C) e D) e E) γ n
C) Identify a positron. A) n B) n C) e D) e E) γ e
D) Identify a positron. A) n B) n C) e D) e E) γ e
E) Identify a positron. A) n B) n C) e D) e E) γ γ

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