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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
1.02 61 neptunium-228: 1.023 61.4 actinium-222m: 1.05 63 californium-240: 1.06 64 fluorine-17: 1.0748 64.49 radon-228: 1.08 65 uranium-227: 1.1 66 einsteinium-245: 1.1 66 bismuth-193: 1.12 67 radon-204: 1.17 70 protactinium-234m: 1.17 70 oxygen-14: 1.1770 70.62 lead-190: 1.18 71 actinium-236: 1.20 72 rutherfordium-261: 1.30 78 americium-232: 1 ...
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.
The 4n + 1 decay chain of neptunium-237, commonly called the "neptunium series" Twenty-four neptunium radioisotopes have been characterized, with the most stable being 237 Np with a half-life of 2.14 million years, 236 Np with a half-life of 154,000 years, and 235 Np with a half-life of 396.1 days.
The radioisotopes were separated from neutron-irradiated target elements using remotely controlled robotic arms in heavily shielded hot cells in the nearby Radiochemical Engineering Development ...
This list of nuclides shows observed nuclides that either are stable or, if radioactive, have half-lives longer than one hour. This represents isotopes of the first 105 elements, except for elements 87 (), 102 and 104 (rutherfordium).
Pages in category "Isotopes of neptunium" The following 33 pages are in this category, out of 33 total. This list may not reflect recent changes. ...
1.4 × 10 10 y: α: 4083 Primordial: basis of thorium fuel cycle: Uranium-235: 92: 143: 7 × 10 8 y: α: 4679 Primordial: fissile, main nuclear fuel Uranium-238: 92: 146: 4.5 × 10 9 y: α: 4267 Primordial: Main Uranium isotope Plutonium-238: 94: 144: 87.7 y: α: 5593 Synthetic: used in radioisotope thermoelectric generators (RTGs) and ...