Question

what is half life period

Answer 1

the time taken to reduce the concentration of the reactant to half of the initial concentration

Answer 2

half life period of any radioactive element is the time in which radioactivity of the element takes place and half of the concentration of the element is been converted into another element. For instance the half life period of carbon 14 isotope is the time in which the half of the carbon 14 is been converted in carbon 12 isotope.