The radioactive decay constant of 98 30 Sr is 7.88 X 10^10 s^-1. The activity of 15 mg of this isotope will be The radioactive decay constant of 98 30 Sr is 7.88 X 10^10 s^-1. The activity of 15 mg of this isotope will be June 7, 2021 Category: Chapter 13 - Nuclei , [...]