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Bookmark or Share- Radioactive isotope | Description, Uses, & Examples | BritannicaRadioactive isotopes of radium, thorium, and uranium, for example, are found naturally in rocks and soil. Uranium and thorium also occur in trace amounts in water. Radon, generated by the radioactive decay of radium, is present in air. Organic materials typically contain small amounts of radioactive carbon and potassium. Cosmic radiation from ...
- Radioactivity | Definition, Types, Applications, & FactsRadioactivity, property exhibited by certain types of matter of emitting energy and subatomic particles spontaneously. It is, in essence, an attribute of individual atomic nuclei. Radioactive decay is a property of several naturally occurring elements as well as of artificially produced isotopes of the elements.
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