Question 1

Indicate the missing word or words in the following definition: "Radioactive is the term used to describe nuclides that possess ________ nuclei that spontaneously emit radiation."

Accepted Answer

A)   abnormally large
B)   unstable
C)   nonspherical
D)   elongatedE) All of the above
F) A) and C)

Question 2

The alpha decay of  produces a nuclide of ________.

Accepted Answer

A)   Po
B)   U
C)   La
D)   ThE) A) and B)
F) C) and D)

Question 3

Complete the following nuclear reactions:
- +  → ________ +

Accepted Answer

The answer of Complete the following nuclear reactions:
- + ...

Question 4

Determine the half-life of a radionuclide if after 48 hours the fraction of undecayed nuclides present is 1/8.

Accepted Answer

A)   16 hours
B)   12 hours
C)   6 hours
D)   8 hoursE) B) and C)
F) C) and D)

Question 5

The amount of a radioisotope that remains after two half-lives have passed is:

Accepted Answer

A)   98%
B)   75%
C)   50%
D)   25%E) None of the above
F) A) and B)

Question 6

A positron is produced in a nucleus by conversion of a ________.

Accepted Answer

A)   proton to a neutron
B)   neutron to a proton
C)   proton to an electron
D)   neutron to an electronE) A) and B)
F) B) and D)

Question 7

The half-life of carbon-14 is 5730 years. What is the approximate age of a fossil with a carbon-14 ratio to carbon 1/64 that of a living organism of the same species?

Accepted Answer

A)   28,650 years
B)   5730 years
C)   34,380 years
D)   17,190 yearsE) A) and B)
F) All of the above

Question 8

Indicate the missing words in the following statement: "A natural decay series always starts with a ________ radionuclide and ends with a ________."

Accepted Answer

A)   short-lived; stable nuclide
B)   short-lived; long-lived radionuclide
C)   long-lived; stable nuclide
D)   long-lived; short-lived radionuclideE) A) and D)
F) A) and C)

Question 9

Write a balanced nuclear equation for the beta-particle decay of a 211Bi isotope.

Accepted Answer

Exam 17: Nuclear Chemistry

The alpha decay of produces a nuclide of ________.

Correct Answer
verified

Indicate the missing word or words in the following definition: "Radioactive is the term used to describe nuclides that possess ________ nuclei that spontaneously emit radiation."

Correct Answer
verified

A positron is produced in a nucleus by conversion of a ________.

Correct Answer
verified

Indicate the missing words in the following statement: "A natural decay series always starts with a radionuclide and ends with a ."

Correct Answer
verified

The half-life of carbon-14 is 5730 years. What is the approximate age of a fossil with a carbon-14 ratio to carbon 1/64 that of a living organism of the same species?

Correct Answer
verified

Complete the following nuclear reactions: - + → ________ +

Correct Answer
verified

Write a balanced nuclear equation for the beta-particle decay of a ²¹¹Bi isotope.

Correct Answer
verified

Determine the half-life of a radionuclide if after 48 hours the fraction of undecayed nuclides present is 1/8.

Correct Answer
verified

The amount of a radioisotope that remains after two half-lives have passed is:

Correct Answer
verified

Exam 17: Nuclear Chemistry

The alpha decay of produces a nuclide of ________.

Correct AnswerverifiedShow Answer

Indicate the missing word or words in the following definition: "Radioactive is the term used to describe nuclides that possess ________ nuclei that spontaneously emit radiation."

Correct AnswerverifiedShow Answer

A positron is produced in a nucleus by conversion of a ________.

Correct AnswerverifiedShow Answer

Indicate the missing words in the following statement: "A natural decay series always starts with a ________ radionuclide and ends with a ________."

Correct AnswerverifiedShow Answer

The half-life of carbon-14 is 5730 years. What is the approximate age of a fossil with a carbon-14 ratio to carbon 1/64 that of a living organism of the same species?

Correct AnswerverifiedShow Answer

Complete the following nuclear reactions: - + → ________ +

Correct AnswerverifiedShow Answer

Write a balanced nuclear equation for the beta-particle decay of a 211Bi isotope.

Correct AnswerverifiedShow Answer

Determine the half-life of a radionuclide if after 48 hours the fraction of undecayed nuclides present is 1/8.

Correct AnswerverifiedShow Answer

The amount of a radioisotope that remains after two half-lives have passed is:

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Indicate the missing words in the following statement: "A natural decay series always starts with a radionuclide and ends with a ."

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Write a balanced nuclear equation for the beta-particle decay of a ²¹¹Bi isotope.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified