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Neptunium-235 has 142 neutrons and a half-life of 396.1 days. This isotope decays by: This isotope decays by: Alpha emission : the decay energy is 5.2 MeV and the decay product is protactinium-231 .
Download as PDF; Printable version; ... 4.6 280 neptunium-230: 4.6 280 radon-225: 4.66 280 ... [free] neutron, 1 0 n: 14.692 881.5 neptunium-232: 14.7
A chart or table of nuclides maps the nuclear, or radioactive, behavior of nuclides, as it distinguishes the isotopes of an element.It contrasts with a periodic table, which only maps their chemical behavior, since isotopes (nuclides that are variants of the same element) do not differ chemically to any significant degree, with the exception of hydrogen.
90 Y is sometimes used for medical purposes and can be obtained either by the neutron activation of stable 89 Y or by using a device similar to a technetium cow. As the half lives of the unstable Yttrium isotopes are low (88 Y being the longest at 106 days), yttrium extracted from strontium-free moderately aged spent fuel has negligible ...
1. α (alpha) radiation—the emission of an alpha particle (which contains 2 protons and 2 neutrons) from an atomic nucleus. When this occurs, the atom's atomic mass will decrease by 4 units and the atomic number will decrease by 2. 2. β (beta) radiation—the transmutation of a neutron into an electron and a proton.
This is the longest half-life directly measured for any unstable isotope; [4] only the half-life of tellurium-128 is longer. [ citation needed ] Of the chemical elements, only 1 element ( tin ) has 10 such stable isotopes, 5 have 7 stable isotopes, 7 have 6 stable isotopes, 11 have 5 stable isotopes, 9 have 4 stable isotopes, 5 have 3 stable ...
This page uses the meta infobox {{Infobox isotopes (meta)}} for the element isotopes infobox.. This infobox contains the table of § Main isotopes, and the § Standard atomic weight.
English. Read; Edit; View history; Tools. ... Download as PDF; Printable version; ... Neptunium compounds (1 C, 16 P) I. Isotopes of neptunium (33 P)