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Determining Half-Life. Measurements of the radioactivity of a certain isotope tell you that the decay rate...

Determining Half-Life. Measurements of the radioactivity of a certain isotope tell you that the decay rate decreases from 9140 decays per minute to 3480 decays per minute over a period of 6.2 days. What is the half-life of this isotope? Note that this is typically a good laboratory experiment to perform in order to estimate half-life.

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Therefore, T1/2 = 0.693/0.156 = 4.44 days

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