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Chapter: 17.2 / Q: 9
Which of the following pairs of nuclides are isotopes?
Chapter: 17.2 / Q: 10
What may the term “radioactive” be correctly used to describe?
Chapter: 17.2 / Q: 11
What may the term radioactivity correctly used to refer to?
Chapter: 17.2 / Q: 12
What does the physical half-life of a pure sample of radioactive material refer to?
Chapter: 17.2 / Q: 13
The radionuclide technetium 99m (4399mTc) is often incorporated into radiopharmaceuticals. When it decays by gamma emission the daughter nucleus may be represented as 4399X (X is not the real chemical symbol for the daughter nucleus!). Which of the following statements is correct?
Chapter: 17.2 / Q: 14
If the halflife of technetium 99 m is 6 hours. After five half-lives what fraction of the original amount of technetium would remain?
Chapter: 17.2 / Q: 15
Why is increasing the distance between yourself and a source of radiation is an effective way of reducing your exposure? Because:
Chapter: 17.2 / Q: 16
If the half-life of technetium 99m is 6 hours. After seven half-lives what fraction of the original amount of technetium would remain?
Chapter: 17.2 / Q: 17
Which statement about the atom and its nucleus is correct?
Chapter: 17.2 / Q: 18
The term ‘radioactive’ when applied to the nucleus of an atom refers to which one of the following phenomena?
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