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Author Question: The ________ of a radioactive substance is the time required for 50 percent of a (Read 945 times)

camila

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on: Jun 7, 2013
The ________ of a radioactive substance is the time required for 50 percent of a given amount of radioisotope to decay. 


Celeste

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Reply #1 on: May 24, 2019
half-life 


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