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neptunium

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Neptunium (Np) | Research Starters - EBSCO
Neptunium (Np) is a synthetic actinide metal with the atomic number 93 , making it the first transuranic element. Discovered in 1940 by Edwin McMillan and Philip H. Abelson, neptunium is produced by bombarding uranium-238 with neutrons, leading to the creation of its most notable isotope, neptunium-239. www.ebsco.com
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Neptunium - Wikipedia
Neptunium is a chemical element; it has symbol Np and atomic number 93. A radioactive actinide metal, neptunium is the first transuranic element. en.wikipedia.org
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Neptunium - Element information, properties and uses | Periodic Table
Neptunium was first made in 1940 by Edwin McMillan and Philip Abelson at Berkeley, California. It came from a uranium target that had been bombarded with slow ... periodic-table.rsc.org
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neptunium
neptunium Chem. (nɛpˈtjuːnɪəm) [mod.L., f. Neptune + -ium.] † 1. [coined in G. (R. Hermann 1877, in Jrnl. f. prakt. Chem. XV. 105).] A supposed element similar to tantalum found in a sample of tantalite from Haddam, Connecticut, U.S.A. Obs.1877 Jrnl. Chem. Soc. XXXII. 167 Neptunium is distinguished ... Oxford English Dictionary
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Neptunium | Radioactive, Fissionable, Transuranic - Britannica
Neptunium (Np), radioactive chemical element of the actinoid series of the periodic table that was the first transuranium element to be artificially produced. www.britannica.com
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#93 - Neptunium - Np
It is found in trace uranium ores. · It is fairly reactive chemically. · It is the first transuranic element (given a number higher than 92). Common ... hobart.k12.in.us
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Neptunium Element Facts - Chemicool
Neptunium was the first synthetic transuranium element (elements after uranium) of the actinide series to be discovered. Neptunium was first produced by ... www.chemicool.com
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Neptunium - Los Alamos National Laboratory
Neptunium-239 was the first transuranium element produced synthetically and the first actinide series transuranium element discovered. This isotope has a beta- ... periodic.lanl.gov
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Facts About Neptunium | Live Science
Neptunium, element 93 on the periodic table of elements, was the first transuranium element to be produced synthetically and the first actinide series ... www.livescience.com
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The Element of the Month - Neptunium - Radleys
Neptunium is a radioactive metal in the actinide series. Its name is derived from the planet Neptune. Neptune is the next planet out from the Sun after Uranus. www.radleys.com
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Neptunium(III) iodide
Neptunium(III) iodide is the iodide of neptunium with the chemical formula NpI3. Preparation Neptunium(III) iodide can be produced by the reaction of neptunium dioxide and aluminium iodide: Properties Neptunium(III) iodide is a wikipedia.org
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Neptunium diarsenide
Neptunium diarsenide is a binary inorganic compound of neptunium and arsenic with the chemical formula . The compound forms crystals. Synthesis Heating stoichiometric amounts of neptunium hydride and arsenic: Physical properties Neptunium diarsenide forms crystals of the tetragonal system wikipedia.org
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Neptunium(III) fluoride
Neptunium(III) fluoride or neptunium trifluoride is a salt of neptunium and fluorine with the formula NpF3. Neptunium compounds Fluorides Actinide halides wikipedia.org
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Neptunium silicide
Neptunium silicide is a binary inorganic compound of neptunium and silicon with the chemical formula . Neptunium disilicide does not dissolve in water. wikipedia.org
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Neptunium(III) chloride
Neptunium(III) chloride or neptunium trichloride is an inorganic compound with a chemical formula NpCl3. This salt is strongly radioactive. Production Neptunium(III) chloride can be produced by reducing neptunium(IV) chloride by ammonia or hydrogen at 350~400 °C: 2{NpCl4}+{H2}\longrightarrow wikipedia.org
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