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The length of time required for half of the radioactive atoms in a sample to decay is its

A. half-life.
B. relative date.
C. radioactive date.
D. period.

2 Answers

4 votes
A half life is the time it takes for half of a certain type of atoms to decay :)
4 votes
The correct answer is half-life. The half life defines the minimum amount of time it will take for a particle to reach the point in the decay process in which it has experienced half the time of it's expectancy. 

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