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What does the half-life of a gamma radiation-emitting tracer refer to?

slickshot76

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What does the half-life of a gamma radiation-emitting tracer refer to?

What does the half-life of a gamma radiation-emitting tracer refer to?

a) The half-life is the time it takes for the substance to reach a non radioactive state
b) The half-life is always 3 days
c) The half-life is the amount of time that the substance requires to begin emitting gamma rays
d) The half-life is the amount of time that it takes for a substance to reach a radioactive state

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