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Which of the Following Is the Best Definition of the Term

Question 5

Multiple Choice

Which of the following is the best definition of the term half-life,as it applies to radioactive substances?


A) The time it takes for one half of the radioactive atoms in a sample to decay
B) Half of the time it takes for the radioactive atoms in a sample to decay
C) The number of radioactive atoms in a sample that decay in one half of a specified time period
D) The average lifetime of a radioactive atom
E) Half of the average lifetime of a radioactive atom

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