The half life period of a radioactive substance is best determined by counting the number of alpha particles emitted per second in a Geiger Muller counter from its known quantity. If the half life period of a radioactive substance is one month, then____________?

Question

Accepted Answer

1/8th of it will remain intact at the end of four months. If the half-life is one month, after two months (two half-lives), 1/4th will remain. After four months (four half-lives), only 1/16th remains.