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Np with a half-life of 396.1 days. All of the remaining radioactive isotopes have half-lives that are less than 4.5 days, and the majority of these have half-lives that are less than 50 minutes. This element also has five meta states, with the most stable being 236m Np (t 1/2 22.5 hours). The isotopes of neptunium range from 219 Np to 244 Np
Download as PDF; Printable version; ... 1.4 radium-217: 1.63 neptunium-223: 2.15 radium-210m: 2.24 ... [free] neutron, 1 0 n: 14.692 881.5
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 ...
A further 10 nuclides, platinum-190, samarium-147, lanthanum-138, rubidium-87, rhenium-187, lutetium-176, thorium-232, uranium-238, potassium-40, and uranium-235 have half-lives between 7.0 × 10 8 and 4.83 × 10 11 years, which means they have experienced at least 0.5% depletion since the formation of the Solar System about 4.6 × 10 9 years ...
3.6 /isotope Full parameter list. ... Download as PDF; Printable version; In other projects Wikidata item; ... 236 Np synth 1.54 × 10 5 y:
Warning: This story contains major spoilers for "Fourth Wing" and "Iron Flame," the first two books in Rebecca Yarros' "Empyrean" series. The following text has been faithfully transcribed from ...
Glovebox. Radiochemistry is the chemistry of radioactive materials, where radioactive isotopes of elements are used to study the properties and chemical reactions of non-radioactive isotopes (often within radiochemistry the absence of radioactivity leads to a substance being described as being inactive as the isotopes are stable).