![]() Radioactive nuclides have different (unique) half-lives that are independent of concentration and environmental factors such as change in temperature and pressure. Radioactive decay yields stable nuclides, particles (alpha, beta, gamma rays) and energy.Ĭhange in the mass of nuclide, number of atoms as well as the time it takes for the decay to occur are useful in the calculation of half-life. ![]() In terms of activity, half-life can be defined as the time it takes for the activity (disintegration per second) of an unstable nuclide to decrease by one-half as it undergoes radioactive decay. The amount in this case refers to mass or number of atoms of a radioactive sample. Half-life (denoted as t 1 / 2) is the time it takes for a given radioactive substance to decay to half its original/initial amount. ![]() Radioactive materials are generally unstable and therefore undergo spontaneous disintegration (radioactive decay) to form a stable nuclide, radiations and energy. ![]()
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