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What happens to isotopes that are unstable? What are the mechanisms by which unstable isotopes may decay into stable isotopes? How may these natural processes be used by chemists to make measurements in the medical, environmental or analytical chemical fields?

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Beverley Smith
Beverley SmithLv2
28 Sep 2019
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Related questions

All the stable isotopes of boron, carbon, nitrogen, oxygen, and fluorine are shown in the accompanying chart (in red), along with their radioactive isotopes with t1/2 > 1 min (in blue). (a) Write the chemical symbols, including mass and atomic numbers, for all of the stable isotopes. (b) Which radioactive isotopes are most likely to decay by beta emission? (c) Some of the isotopes shown are used in positron emission tomography. Which ones would you expect to be most useful for this application? (d) Which isotope would decay to 12.5% of its original concentration after 1 hour?

5. Which nuclear decay product is the slowest?
6. How do beta particles and positrons differ?
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10. What nuclear decay particle is created by the decay of potassium-40 to calcium-40?
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