Matches in DBpedia 2016-04 for { <http://dbpedia.org/resource/Neptunium> ?p ?o }
- Neptunium abstract "Neptunium is a chemical element with 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. A neptunium atom has 93 protons and 93 electrons, of which seven are valence electrons. Neptunium metal is silvery and tarnishes when exposed to air. The element occurs in three allotropic forms and it normally exhibits five oxidation states, ranging from +3 to +7. It is radioactive, poisonous, pyrophoric, and can accumulate in bones, which makes the handling of neptunium dangerous.Although many false claims of its discovery were made over the years, the element was first synthesized by Edwin McMillan and Philip H. Abelson at the Berkeley Radiation Laboratory in 1940. Since then, most neptunium has been and still is produced by neutron irradiation of uranium in nuclear reactors. The vast majority is generated as a by-product in conventional nuclear power reactors. While neptunium itself has no commercial uses at present, it is widely used as a precursor for the formation of plutonium-238, used in radioisotope thermal generators to provide electricity for spacecraft. Neptunium has also been used in detectors of high-energy neutrons.The most stable isotope of neptunium, neptunium-237, is a by-product of nuclear reactors and plutonium production. It, and the isotope neptunium-239, are also found in trace amounts in uranium ores due to neutron capture reactions and beta decay.".
- Neptunium thumbnail Phase_diagram_of_neptunium_(1975).png?width=300.
- Neptunium wikiPageExternalLink neptunium.pdf.
- Neptunium wikiPageExternalLink v=onepage&q&f=false.
- Neptunium wikiPageExternalLink neptunium.html.
- Neptunium wikiPageExternalLink r?dbs+hsdb:@term+@na+@rel+neptunium,+radioactive.
- Neptunium wikiPageExternalLink danl-lbw060502.php.
- Neptunium wikiPageExternalLink 093.htm.
- Neptunium wikiPageID "21277".
- Neptunium wikiPageLength "106242".
- Neptunium wikiPageOutDegree "500".
- Neptunium wikiPageRevisionID "708280032".
- Neptunium wikiPageWikiLink Acetate.
- Neptunium wikiPageWikiLink Acid.
- Neptunium wikiPageWikiLink Actinide.
- Neptunium wikiPageWikiLink Actinide_contraction.
- Neptunium wikiPageWikiLink Actinyl.
- Neptunium wikiPageWikiLink Acute_radiation_syndrome.
- Neptunium wikiPageWikiLink Age_of_the_Earth.
- Neptunium wikiPageWikiLink Alkali_metal.
- Neptunium wikiPageWikiLink Alkaline_earth_metal.
- Neptunium wikiPageWikiLink Allotropes_of_phosphorus.
- Neptunium wikiPageWikiLink Allotropy.
- Neptunium wikiPageWikiLink Alpha_decay.
- Neptunium wikiPageWikiLink Alpha_particle.
- Neptunium wikiPageWikiLink Aluminium.
- Neptunium wikiPageWikiLink Aluminium_bromide.
- Neptunium wikiPageWikiLink Americium.
- Neptunium wikiPageWikiLink Americium-241.
- Neptunium wikiPageWikiLink Amine.
- Neptunium wikiPageWikiLink Ammonia.
- Neptunium wikiPageWikiLink Ampoule.
- Neptunium wikiPageWikiLink Antimonide.
- Neptunium wikiPageWikiLink Antimony.
- Neptunium wikiPageWikiLink Aristid_von_Grosse.
- Neptunium wikiPageWikiLink Arsenic.
- Neptunium wikiPageWikiLink Arsenide.
- Neptunium wikiPageWikiLink Arthur_Wahl.
- Neptunium wikiPageWikiLink Atomic_mass_unit.
- Neptunium wikiPageWikiLink Atomic_number.
- Neptunium wikiPageWikiLink Aufbau_principle.
- Neptunium wikiPageWikiLink Ausonium.
- Neptunium wikiPageWikiLink Azide.
- Neptunium wikiPageWikiLink Barium.
- Neptunium wikiPageWikiLink Barium_sulfate.
- Neptunium wikiPageWikiLink Base_(chemistry).
- Neptunium wikiPageWikiLink Becquerel.
- Neptunium wikiPageWikiLink Belgian_Congo.
- Neptunium wikiPageWikiLink Bentonite.
- Neptunium wikiPageWikiLink Benzene.
- Neptunium wikiPageWikiLink Beta_decay.
- Neptunium wikiPageWikiLink Bicarbonate.
- Neptunium wikiPageWikiLink Biotechnology.
- Neptunium wikiPageWikiLink Bismuth.
- Neptunium wikiPageWikiLink Bismuth_phosphate.
- Neptunium wikiPageWikiLink Block_(periodic_table).
- Neptunium wikiPageWikiLink Bohemium.
- Neptunium wikiPageWikiLink Bone.
- Neptunium wikiPageWikiLink Boron_phosphate.
- Neptunium wikiPageWikiLink Bremsstrahlung.
- Neptunium wikiPageWikiLink Bromide.
- Neptunium wikiPageWikiLink Bromine.
- Neptunium wikiPageWikiLink Bromine_pentafluoride.
- Neptunium wikiPageWikiLink Bromine_trifluoride.
- Neptunium wikiPageWikiLink Butanol.
- Neptunium wikiPageWikiLink Caesium.
- Neptunium wikiPageWikiLink Carbide.
- Neptunium wikiPageWikiLink Carbon.
- Neptunium wikiPageWikiLink Carbon_dioxide.
- Neptunium wikiPageWikiLink Carbon_disulfide.
- Neptunium wikiPageWikiLink Carbon_tetrachloride.
- Neptunium wikiPageWikiLink Carbonate.
- Neptunium wikiPageWikiLink Category:Actinides.
- Neptunium wikiPageWikiLink Category:Chemical_elements.
- Neptunium wikiPageWikiLink Category:Neptunium.
- Neptunium wikiPageWikiLink Category:Synthetic_elements.
- Neptunium wikiPageWikiLink Cation–cation_interaction.
- Neptunium wikiPageWikiLink Celsius.
- Neptunium wikiPageWikiLink Chalcogen.
- Neptunium wikiPageWikiLink Chelation.
- Neptunium wikiPageWikiLink Chemical_element.
- Neptunium wikiPageWikiLink Chemical_formula.
- Neptunium wikiPageWikiLink Chemical_transport_reaction.
- Neptunium wikiPageWikiLink Chloride.
- Neptunium wikiPageWikiLink Chlorine.
- Neptunium wikiPageWikiLink Chromate_and_dichromate.
- Neptunium wikiPageWikiLink Chromatography.
- Neptunium wikiPageWikiLink Chromium.
- Neptunium wikiPageWikiLink Citric_acid.
- Neptunium wikiPageWikiLink Clay_minerals.
- Neptunium wikiPageWikiLink Cobalt.
- Neptunium wikiPageWikiLink Colloid.
- Neptunium wikiPageWikiLink Congener_(chemistry).
- Neptunium wikiPageWikiLink Coordination_complex.
- Neptunium wikiPageWikiLink Copper.
- Neptunium wikiPageWikiLink Coprecipitation.
- Neptunium wikiPageWikiLink Cosmic_ray_spallation.
- Neptunium wikiPageWikiLink Covalent_bond.
- Neptunium wikiPageWikiLink Critical_mass.
- Neptunium wikiPageWikiLink Cross_section_(physics).