The total decay rate R of a sample is related to the decay rate R0 at t = 0 and the disintegration constant or decay constant λ as:
1
R = R0\({e^{ - \left( {\frac{\lambda }{4}} \right)t}}\)
2
R = R0\({e^{ - \left( {\frac{\lambda }{2}} \right)t}}\)
3
R = R0 e-(2λ)t
4
R = R0 e-(λ)t
5
Not Attempted