9 A sample of a radioactive element whose half life is 30 s

Last updated: 6/7/2023

9 A sample of a radioactive element whose half life is 30 s contains a million nuclei at a certain instant of time How many nuclei will be left after 10 s a 3 33 105 3 78 105 c 7 94 105 1 26 105 b d