The half-life of a radioactive material is 3 h. If the initial amount is 300 g, then after 18 h, it will remain it will remain The half-life of a radioactive material is 3 h. If the initial amount is 300 g then after 18 h August 16, 2020 Category: Chapter 31 - Nuclei , NEET Last 32 Years Solved 1988 - 2019 Physics and Chemistry Video Solutions , Physics , Facebook Messenger WhatsApp Share this:TwitterFacebook Related