HomeEVERYDAY SCIENCE MCQS The half life of a radioactive element is 8-days. How long it take to reduce it from 10 mg to 5 mg? July 13, 2018 0 A. 4 days B. 12 days C. 16 days D. 8 days E. None of these Tags EVERYDAY SCIENCE MCQS MCAT MCQS UPDATED MCQs Facebook Twitter