Blog tagged as Radio-activity

Q- Isotope 137 Cs of Cesium has a half life of 30 years. Suppose a distributor sells 5 grams of it in January 1, 2000. (a) Write an equation with giving the number of grams of the isotope left "t" years after January 1, 2000. (b) How many grams are present after 6 years?

Solution: