Define radioactive dating chemistry

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Radioactive decay is the loss of elementary particles from an unstable nucleus, ultimately changing the unstable element into another more stable element. There are five types of radioactive decay: alpha emission, beta emission, positron emission, electron capture, and gamma emission. Each type of decay emits a specific particle which changes the type of product produced.

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Another approach to describing reaction rates is based on the time required for the concentration of a reactant to decrease to one-half its initial value.

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Radioactive isotopealso called radioisotope, radionuclide, or radioactive nuclideany of several species of the same chemical element with different masses whose nuclei are unstable and dissipate excess energy by spontaneously emitting radiation in the form of alphabetaand gamma rays. A radioactive isotope, also known as a radioisotope, radionuclide, or radioactive nuclide, is any of several species of the same chemical element with different masses whose nuclei are unstable and dissipate excess energy by spontaneously emitting radiation in the form of alphabetaand gamma rays. Every chemical element has one or more radioactive isotopes. For example, hydrogenthe lightest element, has three isotopes, which have mass numbers 1, 2, and 3.

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