Radioactive isotope table "lists ALL radioactive nuclei with a half-life greater than 1000 years", incorporated in the list above. The NUBASE2020 evaluation of nuclear physics properties F.G. Kondev et al. 2021 Chinese Phys. C 45 030001. The PDF of this article lists the half-lives of all known radioactives nuclides.

LiveChart is an interactive chart that presents the nuclear structure and decay properties of all known nuclides through a user-friendly graphical interface.

All UAB radioactive materials licensees are required to submit inventories to the Radiation Safety Program quarterly, even if they do not possess any radioactive materials. When decaying radioisotopes for inventory purposes, please use the accepted half-lives listed below.

Half-life of each isotope (same as WWW Chart of the Nuclides 2010) Abundance of each isotope (M.Berglund and M.E.Wieser, Pure Appl. Chem., 83(2), pp.397-410 (2011))

In a chemical reaction, the half-life of a species is the time it takes for the concentration of that substance to fall to half of its initial value. In a first-order reaction the half-life of the reactant is ln(2)/λ, where λ (also denoted as k) is the reaction rate constant.

The half-life is independent of concentration, temperature, and pressure, i.e., the t 1/2 is a characteristic constant of a radioisotope. Natural radioactive isotopes usually have a longer half-life, e.g., t 1/2 carbon-14 is 5730 years and uranium-235 is 7.0 x 10 8 years.

The following table lists ALL radioactive nuclei with a half-life greater than 1000 years. An element decays away below detectable levels in about ten to fifteen half-lives.

We have shown the list of elements Half-Life of the elements for which reliable data is available. This Half-Life table gives the Half-Life of all the elements of periodic table . Click on 'Element Atomic Number', 'Element Symbol', 'Element Name' and 'Element Half-Life ' headers to sort.

Nov 5, 2024 · In radioactivity, half-life describes the time it takes for half of the atoms in a sample of a radioactive substance to decay. The half-life is a fixed characteristic of that substance and is independent of the amount of material present.

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