Expression for half life of radioactive …
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Meghna Thapar 5 years, 3 months ago
The half life of radioactive nuclides is defined as the time in which half of the original number of radioactive atoms has decayed. Example: Imagine you start with 100 atoms of nuclide X. X decays to nuclide Y with a half life of 10 days. However, the half-life can be calculated from the decay constant as follows: half-life = ln (2) / (decay constant). To measure the decay constant, we take a sample of known mass and measure the number of radioactive decays per second as a function of time.
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