Americium — Américium Américium Plutoni … Wikipédia en Français
Américium — Plutonium ← Américium → Curium Eu … Wikipédia en Français
AMÉRICIUM — L’américium (symbole Am) est un élément artificiel qui fait partie d’une série d’éléments lourds découverts depuis 1940, les transuraniens . Comme tous ces éléments, il possède de nombreux isotopes, tous radioactifs. Son numéro atomique, 95, le… … Encyclopédie Universelle
Americium — (pronEng|ˌæməˈrɪsiəm) is a synthetic element that has the symbol Am and atomic number 95. A radioactive metallic element, americium is an actinide that was obtained in 1944 by bombarding plutonium with neutrons and was the fourth transuranic… … Wikipedia
Américium 242 — Américium 242m L américium 242m, noté 242mAm[1], est un isomère nucléaire de l isotope de l américium dont le nombre de masse est égal à 242 : son noyau atomique compte 95 protons et 147 neutrons avec un spin 5 pour une masse… … Wikipédia en Français
Americium-242 — Americium 242m is a radioactive isotope of Americium with 95 protons and electrons and 147 neutrons and a mass of 242.0595492 g/mol. It has a half life of approximately 141 years, decaying: #99.54% of the time by isomeric transition (with a decay … Wikipedia
Americium-243 — is a radioactive isotope of americium having 95 electrons and protons and 148 neutrons and has a mass of 243.06138 g/mol. It has a half life of 7370 years and is highly unstable, hence it is not found in nature. It either decays by spontaneous… … Wikipedia
Americium chloride — can refer to:*Americium(II) chloride, AmCl2 *Americium(III) chloride, AmCl3 … Wikipedia
americium — AMERÍCIUM s.n. v. americiu. Trimis de ana zecheru, 13.09.2007. Sursa: DEX 98 AMERÍCIUM s.n. v. americiu. Trimis de LauraGellner, 13.09.2007. Sursa: DN … Dicționar Român
americium — Symbol: Am Atomic number: 95 Atomic weight: (243) Radioactive metallic transuranic element, belongs to the actinoids. Ten known isotopes. Am 243 is the most stable isotope, with a half life of 7.95*10^3 years. Discovered by Glenn T. Seaborg and… … Elements of periodic system
americium — ☆ americium [am΄ər ish′ē əm, am΄əris′ē əm ] n. [ModL, after AMERIC(A) + IUM: so named by SEABORG Glenn T(heodore), one of its discoverers, by analogy with EUROPIUM, the corresponding rare earth] a radioactive, metallic chemical element, one of… … English World dictionary
