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The nucleus of a uranium atom

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  • Atom — The atom is the smallest unit of an element that retains the chemical properties of that element. An atom has an electron cloud consisting of negatively charged electrons surrounding a dense nucleus. The nucleus contains positively charged… …   Wikipedia

  • atom — /at euhm/, n. 1. Physics. a. the smallest component of an element having the chemical properties of the element, consisting of a nucleus containing combinations of neutrons and protons and one or more electrons bound to the nucleus by electrical… …   Universalium

  • 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

  • atom — 01. Water molecules are strongly attracted to each other through their two hydrogen [atoms]. 02. Energy binds [atoms] together into molecules. 03. Scientist Amaeo Avogadro first distinguished molecules from [atoms] in 1811. 04. [Atoms] and… …   Grammatical examples in English

  • uranium processing — Introduction       preparation of the ore for use in various products.       Uranium (U), although very dense (19.1 grams per cubic centimetre), is a relatively weak, nonrefractory metal. Indeed, the metallic properties of uranium appear to be… …   Universalium

  • Atom — Eine Illustration des Heliumatoms im Grundzustand, die den Atomkern (rosa) und die Aufenthaltswahrscheinlichkeit der Elektronen (schwarz) darstellt. Der Heliumkern (oben rechts) ist in Wirklichkeit kugelsymmetrisch; das ist bei manchen größeren… …   Deutsch Wikipedia

  • 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

  • Atom-Bombe — Atompilz von „Fat Man“ über Nagasaki. Kernwaffen – auch Nuklearwaffen oder Atomwaffen genannt – sind Waffen, deren Wirkung auf kernphysikalischen Prozessen beruht, insbesondere der Kernspaltung und Kernfusion. Konventionelle Waffen beziehen… …   Deutsch Wikipedia

  • Science and technology in the United States — The United States came into being around the Age of Enlightenment (circa 1680 to 1800), a period in which writers and thinkers rejected the superstitions of the past. Instead, they emphasized the powers of reason and unbiased inquiry, especially… …   Wikipedia

  • Atomic nucleus — A figurative depiction of the helium 4 atom with the electron cloud in shades of gray. In the nucleus, the two protons and two neutrons are depicted in red and blue. This depiction shows the particles as separate, whereas in an actual helium atom …   Wikipedia

  • Nuclear power in the United States — For a comprehensive list of U.S. plants, see List of nuclear reactors. NRC regions and locations of nuclear reactors, 2008 Main article: Nuclear power As of 2008, nuclear power in the United States is provided by 104 commercial reactors (69 …   Wikipedia

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