after how many years will there be just 2.5 g of the element in the block?

Sahay Sir > Question Answers > after how many years will there be just 2.5 g of the element in the block?
A certain radioactive element has a half-life of 20 years. If you had 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?
28
Nov
A certain radioactive element has a half-life of 20 years. If you had 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 certain radioactive element has a half-life of 20 years. If you had a block with [...]
Posted in: AIIMS Last 24 Years Solved 1996 - 2019 Physics and Chemistry Video Solutions , Chapter 31 - Nuclei , Physics ,
Tags: A certain radioactive element has a half-life of 20 years. If you had 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? ,