The half life of a radioactive element is 8-days. How long it take to reduce it from 10 mg to 5 mg?
ANone of these
B4 days
C12 days
D16 days
E8 days
Correct answer
E. 8 days
Explanation
8 days is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.