define half life of an element
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The half-life of a substance is the time it takes for half of the substance to decay. The word "half-life" was first used when talking about radioactive elements where the number of atoms get smaller over time. ... Note that half-life is defined as a probability.
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The half-life of a substance is the time it takes for half of the substance to decay. The word "half-life" was first used when talking about radioactive elements where the number of atoms get smaller over time. ... Note that half-life is defined as a probability.
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Explanation:
The terms half-life and mean or average life are both factors pertaining to radioactive decay. The half-life (T½) of a radioactive substance is defined as the time required for either the radioactivity or the number of radioactive atoms to decay to half of the initial value
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