Question

What is the difference between half-life and duration?

Answer 1

DURATION	HALF-LIFE
1.It is the time period of the radioactive decay.	1.Half life is the time that an element takes in breakdown into another nucleus.
2.Duration is the life of the element.	2.If we know the half life of any element than we can easily predict that weather we can handle it or not.
3.Duration is the total time taken by the element until it decays.	3.Formula for Half-Life $t_{\frac{1}{2}}=0.693/\lambda$ where $\mathrm{\lambda }$ is decay constant.