A radioactive sample has 6.0 * 10^18 active nuclei at a certain instant. How many of these nuclei will still be in the same active after two half -lives? A radioactive sample has 6.0 * 10^18 active nuclei at a certain instant. How many of these nuclei will still be in the same active after two half -lives? September 12, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) , Facebook Messenger WhatsApp Share this:TwitterFacebook Related