Radioactive decay is a first-order process. The half- life ($T$) of a radioactive substance is the time required for half of the initial amount to decay. The fraction of the original substance remaining after time $t$ is given by $\left(\frac{1}{2}\right)^{t/T} $.
The half-life of Polonium is 140 days. In what time, will 15 g of Polonium be disintegrated out of its initial mass of 16 g ?
Asked in Co operative Supervisor & Environment Supervisor (Group C) Exam 2023 · Topic: Nuclear Physics (Radioactivity: Alpha, Beta (Fermi theory, selection rules, parity violation), Gamma decay (multipole transitions, internal conversion).)
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