Question

Manganese-52 has a half-life of 6 days. how many days would a scientist have to wait for the radioactivity to be 12.5% the starting amount? 6 12 18 24

Answer 1

5%

Step-by-step explanation:

Let the number of half life be n : Now, number of days required is : So, required time to reach 12. 5% is 18 days.