What is the term for the amount of time required for 50% of the radioactive nuclei in a given sample to decay?

Question

Quizplus · Accepted Answer

Half-life is the term used to describe the amount of time required for 50% of the radioactive nuclei in a given sample to decay. It is a characteristic of each radioactive isotope and is useful in determining the age of fossils and rocks, as well as in medical applications such as determining the dosage and frequency of radiation therapy.

What Is the Term for the Amount of Time Required