atomic nucleus

atomic nucleus
the central core of an atom, constituting almost all of its mass but only a small part of its volume, and composed of protons and neutrons, the protons being positively charged and their number (atomic number) being fixed for all the atoms of each element and equal to the number of the orbiting electrons. The neutrons, which bear no charge, may vary in number, accounting for the isotopes of an element.

Medical dictionary. 2011.

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  • Atomic nucleus — См. Атомное ядро Термины атомной энергетики. Концерн Росэнергоатом, 2010 …   Термины атомной энергетики

  • 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

  • atomic nucleus — atomo branduolys statusas T sritis fizika atitikmenys: angl. atomic nucleus; nucleus of atom vok. Atomkern, m; Kern des Atoms, m rus. атомное ядро, n; ядро атома, n pranc. noyau atomique, m; noyau de l’atome, m …   Fizikos terminų žodynas

  • atomic nucleus — atomo branduolys statusas T sritis chemija apibrėžtis Centrinė atomo dalis, susidedanti iš protonų ir neutronų (nukleonų). atitikmenys: angl. atomic nucleus rus. атомное ядро …   Chemijos terminų aiškinamasis žodynas

  • atomic nucleus — atomo branduolys statusas T sritis apsauga nuo naikinimo priemonių apibrėžtis Centrinė atomo dalis, kurioje sutelkta beveik visa atomo masė. Atomo branduolys turi teigiamąjį krūvį, yra sudarytas iš teigiamąjį krūvį turinčių protonų ir neutraliųjų …   Apsaugos nuo naikinimo priemonių enciklopedinis žodynas

  • atomic nucleus — nucleus or center of an atom …   English contemporary dictionary

  • atomic nucleus — noun A nucleus of an atom; consisting of protons and neutrons, surrounded by an electron cloud …   Wiktionary

  • atomic nucleus — Смотри атомное ядро …   Энциклопедический словарь по металлургии

  • Atomic nucleus —   The positively charged core of an atom.   California Energy Comission. Dictionary of Energy Terms …   Energy terms

  • Atomic theory — Atomic model redirects here. For the unrelated term in mathematical logic, see Atomic model (mathematical logic). This article is about the historical models of the atom. For a history of the study of how atoms combine to form molecules, see… …   Wikipedia

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