The _____ of a radioactive substance is the time it takes for half of the substance to decay.
A)doubling time
B)half-life
C)shelf-life
D)halving time

Question

Quizplus · Accepted Answer

The definition given in the question matches with the concept of half-life, which is the time it takes for the amount of a radioactive substance to reduce to half of its original amount. Therefore, the best choice is B: half-life.

The _____ of a Radioactive Substance Is the Time It