Cesium-131 is a short-lived radioisotope (t1/2)=9.7 days) used to treat prostate cancer, How much theraputic strength does a cesium 131

theraputic-strength
short-lived

#1

cesium-131 is a short-lived radioisotope (t1/2)=9.7 days) used to treat prostate cancer, How much theraputic strength does a cesium 131 source lose over 60 days? express your answer as a percent of the strength the source had at the beginning of the first day

Answer:

{1 - [(1/2)^(60 / 9.7)]} * 100%