The half-life of a radionuclide is a. half the time needed for a sample to decay entirely
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The half-life of a radionuclide is
a. half the time needed for a sample to decay entirely
b. half the time a sample can be kept before it begins to decay
c. the time needed for half a sample to decay
d. the time needed for the remainder of a sample to decay after half of it has already decayed
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