A radioactive substance has a half-life of 20 hours. What traction of the original radioactive nuclide will remain after 80 hours? by Sunday | Aug 30 | Physics WAEC | 0 comments A. 1/32 B. 1/16 C. 1/8 D. ¼ E. 1/2 Correct Answer: Option B – 1/16 Users Also Read These:A radioactive substance of mass 768g has a half-life…Two radioactive elements Q and S have half-life…If a current of 2.5A flows through an electrolyte…Which of the following are emitted from a…the time it will take a certain radioactive material…