For a sample of a given radioactive isotope, the ratio of the number of atoms of the isotope at time t to the number at time t + T1/2 is
A) always 2.
B) dependent on how long it has been since t = 0.
C) Dependent upon what the value of T1/2.
D) always 1/2.
E) might be any number less than 1/2.
Correct Answer:
Verified
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