Which statement,A - D,regarding the activity of a radioactive sample,is NOT correct? If all are correct,respond E.
A) The activity of a sample is the number of decay events per second.
B) The activity depends on a rate constant for the decay and the amount of the radioisotope in the sample.
C) Radioactive decay follows first-order reaction kinetics.
D) The activity will decrease to half its initial value in a time equal to ln(2) /k,where k is the rate constant.
E) A-D are all correct.
Correct Answer:
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