- Half-life of a radioactive isotope; - Time it takes for the number of nuclei of the isotope in a sample to halve. ALSO: - Time it takes for the count rate (or actvitiy) from a sample containing the isotope to fall to half its initial level.

Half life Flashcards by Sim <3 floaties

What is half life?

Half-life of a radioactive isotope;
Time it takes for the number of nuclei of the isotope in a sample to halve.

ALSO:
- Time it takes for the count rate (or actvitiy) from a sample containing the isotope to fall to half its initial level.

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Half life Flashcards

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