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production of isotopes

См. также в других словарях:

  • ISOTOPES — Les atomes sont constitués d’un noyau autour duquel gravitent Z électrons. Le noyau atomique est lui même composé de Z protons portant chacun une charge positive unité et de N neutrons non chargés. Les masses du proton et du neutron étant… …   Encyclopédie Universelle

  • Isotopes of dubnium — Dubnium (Db) is an artificial element, and thus a standard atomic mass cannot be given. Like all artificial elements, it has no stable isotopes. The first isotope to be synthesized was 261Db in 1968. There are 12 known radioisotopes from 256Db to …   Wikipedia

  • Isotopes of plutonium — Plutonium (Pu) has no stable isotopes. A standard atomic mass cannot be given.Decay modesTwenty plutonium radioisotopes have been characterized. The most stable are Pu 244, with a half life of 80.8 million years, Pu 242, with a half life of… …   Wikipedia

  • Isotopes du lithium — Le lithium (Li) d origine naturelle (masse atomique : 6.941(2) u) est présent dans la nature sous la forme de deux isotopes stables, 6Li et 7Li, ce dernier étant le plus abondant (92,5 %). Les deux isotopes ont une plus faible énergie… …   Wikipédia en Français

  • Isotopes of nobelium — Nobelium (No) is an artificial element, and thus a standard atomic mass cannot be given. Like all artificial elements, it has no stable isotopes. The first isotope to be synthesized (and correctly identified) was 254No in 1966. There are 16 known …   Wikipedia

  • Isotopes de l'hélium — L hélium (He) (masse atomique standard: 4,002602(2) u) possède huit isotopes connus, mais seulement deux sont stables, l hélium 3 (3He) et l hélium 4 (4He). Tous les radioisotopes de l hélium ont une durée de vie courte, 6He, celui à la durée la… …   Wikipédia en Français

  • Isotopes of lithium — Naturally occurring lithium (Li) (standard atomic mass: 6.941(2) u) is composed of two stable isotopes (SimpleNuclide|Lithium|6 and SimpleNuclide|Lithium|7, the latter being the more abundant (92.5% natural abundance). Seven radioisotopes have… …   Wikipedia

  • Isotopes of molybdenum — There are 33 known isotopes of molybdenum (Mo) ranging in atomic mass from 83 to 115, as well as four metastable nuclear isomers. Seven isotopes occur naturally, with atomic masses of 92, 94, 95, 96, 97, 98, and 100. Of these naturally occurring… …   Wikipedia

  • Isotopes of niobium — Naturally occurring niobium (Nb), element 41, is composed of one stable isotope (93Nb). 93Nb is the lightest nuclide theoretically susceptible to spontaneous fission, and although this has never been observed, it makes niobium theoretically the… …   Wikipedia

  • Isotopes of aluminium — Aluminium (Al) has multiple isotopes. Only 27Al (stable isotope) and 26Al (radioactive isotope, t 1/2 = 7.2 × 105 y) occur naturally, however 27Al has a natural abundance of 99.9+ %. Standard atomic mass is 26.9815386(8) u. 26Al is produced from… …   Wikipedia

  • Isotopes of xenon — Naturally occurring xenon (Xe) is made of nine stable isotopes. (124Xe, 134Xe and 136Xe are predicted to undergo double beta decay, but this has never been observed, so they are considered to be stable.) [… …   Wikipedia


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