Question 1

Listed below are the mass numbers for several isotopes of cobalt, along with their mode(s)  of decay and the half-lives. Which of them is best suited for use as a tracer?(If needed, use the following equations: + (1.46 min)  B)  55,  \beta + (17.5 hr)  C)  56, EC (77.7 day)  D)  58,  \beta + (70.9 dy)  E)  60,  \beta - (5.272 yr)  " class="answers-bank-image d-inline" rel="preload" > + (1.46 min)  B)  55,  \beta + (17.5 hr)  C)  56, EC (77.7 day)  D)  58,  \beta + (70.9 dy)  E)  60,  \beta - (5.272 yr)  " class="answers-bank-image d-inline" rel="preload" > )

Accepted Answer

A)   53,  β\betaβ + (1.46 min) 
B)   55,  β\betaβ + (17.5 hr) 
C)   56, EC (77.7 day) 
D)   58,  β\betaβ + (70.9 dy) 
E)   60,  β\betaβ - (5.272 yr)

Question 2

When 60Ni is bombarded with a proton, the unstable product undergoes a further nuclear reaction, ejecting an  α\alphaα  particle to form a stable product. What is the identity of this stable product?

Accepted Answer

A)   56Co
B)   57Co
C)   57Fe
D)   55Fe
E)   65Ga

Question 3

Your lab is sent an ash sample from an archeological dig that you determine has a Carbon-14 activity of 1200 counts per minute. A piece of ash taken from your fireplace has a Carbon-14 activity of 3600 counts per minute. How old was the campsite where the ash was taken from? (14C has a half-life of 5730 years.)

Accepted Answer

A)   5700 years
B)   9100 years
C)   11,500 years
D)   17,200 years
E)   24,000 years

Question 4

Which of the following is the order of radiation type as a function of increasing ionization potential?

Accepted Answer

A)    α\alphaα ,  β\betaβ ,  γ\gammaγ 
B)    β\betaβ ,  α\alphaα ,  γ\gammaγ 
C)    γ\gammaγ , β\betaβ ,  α\alphaα 
D)    β\betaβ ,  γ\gammaγ ,  α\alphaα 
E)    α\alphaα ,  γ\gammaγ ,  β\betaβ

Exam 21: Nuclear Chemistry and Radiochemistry

When ⁶⁰Ni is bombarded with a proton, the unstable product undergoes a further nuclear reaction, ejecting an $\alpha$ particle to form a stable product. What is the identity of this stable product?

Correct Answer
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Correct Answer
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Which of the following is the order of radiation type as a function of increasing ionization potential?

Correct Answer
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Correct Answer
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Exam 21: Nuclear Chemistry and Radiochemistry

When 60Ni is bombarded with a proton, the unstable product undergoes a further nuclear reaction, ejecting an α\alphaα particle to form a stable product. What is the identity of this stable product?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Which of the following is the order of radiation type as a function of increasing ionization potential?

Correct AnswerverifiedShow Answer

Listed below are the mass numbers for several isotopes of cobalt, along with their mode(s) of decay and the half-lives. Which of them is best suited for use as a tracer?(If needed, use the following equations: )

Correct AnswerverifiedShow Answer

When ⁶⁰Ni is bombarded with a proton, the unstable product undergoes a further nuclear reaction, ejecting an $\alpha$ particle to form a stable product. What is the identity of this stable product?

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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