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Physics - GCSE AQA - Combined Science - Higher
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Question:
What is the half life of a radioactive isotope?
Author: yxng.edxnAnswer:
The time it takes for the number of nuclei of the isotope to half.
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Alternative answers:
The time it takes for the count rate or activity of the sample containing the isotope to fall to half of its initial value.
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yxng.edxn