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neptunium

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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 - Wikipedia
Neptunium is a chemical element; it has symbol Np and atomic number 93. A radioactive actinide metal, neptunium is the first transuranic element. Its position in the periodic table just after uranium, named after the planet Uranus, led to it being named after Neptune, the next planet beyond Uranus.
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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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Neptunium(V) fluoride
Neptunium(V) fluoride or neptunium pentafluoride is a chemical compound of neptunium and fluorine with the formula NpF5. Properties Neptunium(V) fluoride thermally decomposes at 318 °C to produce neptunium(IV) fluoride and neptunium(VI) fluoride. wikipedia.org
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Neptunium fluoride
Neptunium fluoride may refer to: Neptunium(III) fluoride, NpF3 Neptunium(IV) fluoride, NpF4 Neptunium(V) fluoride, NpF5 Neptunium(VI) fluoride, NpF6 wikipedia.org
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Neptunium(VII) oxide-hydroxide
Neptunium(VII) oxide-hydroxide is a chemical compound which has neptunium in its highest oxidation state of +7. References Neptunium compounds Hydroxides wikipedia.org
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Neptunium(IV) oxalate
Synthesis Neptunium(IV) oxalate is formed by the oxalic acid precipitation of neptunium (IV) solutions: Physical properties Neptunium(IV) oxalate forms of neptunium. wikipedia.org
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Neptunium compounds
Neptunium compounds are compounds containg the element neptunium (Np). neptunium compounds. wikipedia.org
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Neptunium(VI) fluoride
Other methods Using a different starting material Neptunium hexafluoride can also be obtained by fluorination of neptunium(III) fluoride or neptunium Neptunium dioxide and neptunium tetrafluoride are practically completely converted to volatile neptunium hexafluoride by dioxygen difluoride (O2F2). wikipedia.org
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Neptunium(IV) nitrate
Neptunium(IV) nitrate is an inorganic compound, a salt of neptunium and nitric acid with the chemical formula Np(NO3)4. References Neptunium compounds Nitrates wikipedia.org
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Neptunium(IV) fluoride
Neptunium(IV) fluoride or neptunium tetrafluoride is a inorganic compound with the formula NpF4. It is a green salt and is isostructural with UF4. Synthesis Neptunium(IV) fluoride can be prepared by reacting neptunium(III) fluoride or neptunium dioxide with a gas mixture of oxygen and hydrogen fluoride wikipedia.org
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