The half life of radioactive nucleus is 100 years. The time interval between 20% and 80% decay of the parent nucleus is The half life of radioactive nucleus is 100 years. The time interval between 20% and 80% decay of the parent nucleus is June 7, 2021 Category: Chapter 13 - Nuclei , MTG NEET Physics , Part 2 , Facebook Messenger WhatsApp Share this:TwitterFacebook Related