New Collegiate Dictionary. 2001.
Uranium-235 — Уран 235 природный изотоп урана с атомной массой 235. Содержание урана 235 в природном уране 0,715 %, период полураспада 7,1·108 лет. Уран 235 является единственным делящимся материалом, существующим в природе. Термины атомной энергетики. Концерн … Термины атомной энергетики
uranium 235 — n a light isotope of uranium of mass number 235 that when bombarded with slow neutrons undergoes rapid fission into smaller atoms with the release of neutrons and atomic energy … Medical dictionary
Uranium-235 — Infobox isotope background = #fc6 text color = isotope name = Uranium 235 isotope filename = alternate names = mass number = 235 symbol =U num neutrons = 143 num protons = 92 abundance =0.72% halflife = 703,800,000 years error halflife = decay… … Wikipedia
Uranium 235 — L uranium 235, noté 235U, est l isotope de l uranium dont le nombre de masse est égal à 235 : son noyau atomique compte 92 protons et 143 neutrons avec un spin 7/2 pour une masse atomique de 235,0439299 g/mol. Il est caractérisé par un excès … Wikipédia en Français
uranium 235 — noun a uranium isotope with mass number 235; capable of sustaining chain reactions • Hypernyms: ↑uranium, ↑U, ↑atomic number 92 * * * noun : a light isotope of uranium of mass number 235 that is physically separable from natural uranium or is… … Useful english dictionary
uranium 235 — Chem. the radioactive uranium isotope having a mass number of 235, comprising 0.715 percent of natural uranium. When bombarded with neutrons it undergoes fission with the release of energy. Also called U 235, U 235, actinouranium. [1935 40] * * * … Universalium
uranium 235 — n. chem. the radioactive uranium isotope having a mass number of 235 and that undergoes fission with a release of energy when bombarded with neutrons • Etymology: 1935–40 … From formal English to slang
uranium-235 — noun An isotope of uranium, used for energy generation and in atomic weapons, containing one hundred and forty three neutrons. It has a half life of 7·038×10 years, whereupon it decays into thorium 231 … Wiktionary
Uranium — (pronEng|jʊˈreɪniəm) is a silvery gray metallic chemical element in the actinide series of the periodic table that has the symbol U and atomic number 92. It has 92 protons and 92 electrons, 6 of them valence electrons. It can have between 141 and … Wikipedia
Uranium — Protactinium ← Uranium → Neptunium Nd … Wikipédia en Français
