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shell stability

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  • Shell model — In nuclear physics, the nuclear shell model is a model of the atomic nucleus which uses the Pauli principle to describe the structure of the nucleus in terms of energy levels. The model was developed in 1949 following independent work by several… …   Wikipedia

  • shell atomic model — ▪ physics       simplified description of the structure of atoms that was first proposed by the physicists J. Hans D. Jensen (Jensen, J. Hans D.) and Maria Goeppert Mayer (Mayer, Maria Goeppert) working independently in 1949. In this model,… …   Universalium

  • Island of stability — The island of stability is a term from nuclear physics that describes the possibility of elements with particularly stable magic numbers of protons and neutrons. This would allow certain isotopes of some transuranic elements to be far more stable …   Wikipedia

  • Nuclear shell model — In nuclear physics and nuclear chemistry, the nuclear shell model is a model of the atomic nucleus which uses the Pauli exclusion principle to describe the structure of the nucleus in terms of energy levels.[1] The first shell model was proposed… …   Wikipedia

  • Audi A2 — Infobox Automobile name = Audi A2 manufacturer = Audi AG parent company = Volkswagen AG aka = production = 1999 ndash;2005 assembly = Neckarsulm, Germany predecessor = successor = Audi A1 class = Supermini body style = 5 door… …   Wikipedia

  • Unbipentium — | |Unbipentium (pronEng|ˌʌnbɨˈpɛntiəm), or eka neptunium, is the temporary name of an undiscovered chemical element in the periodic table that has the temporary symbol Ubp and has the atomic number 125. History The name unbipentium is used as a… …   Wikipedia

  • nuclear fission — fission (def. 2). [1885 90] * * * Division of a heavy atomic nucleus into two fragments of roughly equal mass, accompanied by the release of a large amount of energy, the binding energy of the subatomic particles. The energy released in the… …   Universalium

  • Economic Affairs — ▪ 2006 Introduction In 2005 rising U.S. deficits, tight monetary policies, and higher oil prices triggered by hurricane damage in the Gulf of Mexico were moderating influences on the world economy and on U.S. stock markets, but some other… …   Universalium

  • building construction — Techniques and industry involved in the assembly and erection of structures. Early humans built primarily for shelter, using simple methods. Building materials came from the land, and fabrication was dictated by the limits of the materials and… …   Universalium

  • chemical bonding — ▪ chemistry Introduction       any of the interactions that account for the association of atoms into molecules, ions, crystals, and other stable species that make up the familiar substances of the everyday world. When atoms approach one another …   Universalium

  • transuranium element — Any of the chemical elements after uranium in the periodic table (with atomic numbers greater than 92). All are radioactive (see radioactivity), with half lives ranging from tens of millions of years to fractions of a millisecond. Only two,… …   Universalium

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