In radioactive decay,when the parent material decays to one-quarter of its original amount,the time is
A)one half-life.
B)two half-lives.
C)three half-lives.
D)four half-lives.

Question

Quizplus · Accepted Answer

In radioactive decay, the amount of the parent material decreases by half in one half-life. Therefore, if the parent material decays to one-quarter of its original amount, it has gone through two half-lives.

In Radioactive Decay,when the Parent Material Decays to One-Quarter of Its