Question

Question # 9 The half life of radium - 226 is 1620 years. If N is its total amount then after the four half lives, its left amount will be

Answer 1

Answer:

Explanation:

N=N'/(2^n),where n is number of half life,N' is concentration after n half lives

Apply this formula, you will get the answer.

Answer 2

Explanation:

apply the formula you will get the answer