What is half life? October 9, 2024July 4, 2020 by Admin The time required to decay half of the total amount of atoms present in a radioactive element is called half-life. Related Posts:What are radioactive rays?External Sources of FinanceFinance and Business FinanceSupplemental Life Insurance: Enhancing Your Coverage…Food contamination, Causes, symptoms, and its PreventionAtom Definition, What is atom? How big is an atom?