If three samples have the half-lives listed below,which is the most radioactive?
A)a sample with a half-life of 20 minutes
B)a sample with a half-life of 20 hours
C)a sample with a half-life of 20 years
D)a sample with a half-life of 20 million years
E)none of the above

Question

Quizplus · Accepted Answer

The shorter the half-life, the more radioactive the sample is. Since sample A has the shortest half-life of only 20 minutes, it is the most radioactive.

If Three Samples Have the Half-Lives Listed Below,which Is the Most