2. The activity of a certain radionuclide isotope decreases to 21 percent of its original value in 30 hrs. The half-life
Posted: Fri Jul 01, 2022 7:22 am
2. The activity of a certain radionuclide isotope decreases to 21 percent of its original value in 30 hrs. The half-life of this isotope is: O 14.5 O 13.5 O 14 O 13 O Other: