Of course the 87.5 grams that are no longer present as the original substance after 24 minutes have not disappeared but remain in the form of one or more other substances in the isotope's radioactive decay series. If 100 grams of the isotope are originally present, then only 50 grams will remain after 8 minutes, 25 grams after 16 minutes (2 half-lives), 12.5 grams after 24 minutes (3 half-lives), and so on. Click the link for more information. of thorium is 8 minutes. Natural or artificially created isotope of a chemical element having an unstable nucleus that decays, emitting alpha, beta, or gamma rays until stability is reached. For example, the half-life of a particular radioactive isotope radioactive isotope One half-life is the time required for one half of any given quantity of the substance to decay. Click the link for more information.) or an unstable subatomic particle. The energy produced by radioactivity has important military and industrial applications. Spontaneous disintegration or decay of the nucleus of an atom by emission of particles, usually accompanied by electromagnetic radiation. Continued abuse of our services will cause your IP address to be blocked indefinitely.Half-life, measure of the average lifetime of a radioactive substance (see radioactivity radioactivity, Please fill out the CAPTCHA below and then click the button to indicate that you agree to these terms. If you wish to be unblocked, you must agree that you will take immediate steps to rectify this issue. If you do not understand what is causing this behavior, please contact us here. If you promise to stop (by clicking the Agree button below), we'll unblock your connection for now, but we will immediately re-block it if we detect additional bad behavior. Overusing our search engine with a very large number of searches in a very short amount of time.Using a badly configured (or badly written) browser add-on for blocking content.Running a 'scraper' or 'downloader' program that either does not identify itself or uses fake headers to elude detection.

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Half-life game