D A certain radioactive element has a half life of 20 years

Last updated: 6/30/2023

D A certain radioactive element has a half life of 20 years If we have a block with 10 g of the element in it after how many years will there be just 2 5 g of the element in the block a 80 years 40 years c 100 years 60 years b d 1995 2001