Matches in DBpedia 2015-10 for { <http://dbpedia.org/resource/Astatine> ?p ?o }
- Astatine abstract "Astatine is a very rare radioactive chemical element with the chemical symbol At and atomic number 85. It occurs on Earth as the decay product of various heavier elements. All its isotopes are short-lived; the most stable is astatine-210, with a half-life of 8.1 hours. Elemental astatine has never been viewed because any macroscopic sample would be immediately vaporized by its radioactive heating. It has yet to be determined if this obstacle could be overcome with sufficient cooling.The bulk properties of astatine are not known with any certainty. Many of these have been estimated based on its periodic table position as a heavier analog of iodine, and a member of the halogens – the group of elements including fluorine, chlorine and bromine. It is likely to have a dark or lustrous appearance and may be a semiconductor or possibly a metal; it probably has a higher melting point than that of iodine. Chemically, several anionic species of astatine are known and most of its compounds resemble those of iodine. It also shows some metallic behavior, including being able to form a stable monatomic cation in aqueous solution (unlike the lighter halogens).Dale R. Corson, Kenneth Ross MacKenzie, and Emilio G. Segrè synthesized the element at the University of California, Berkeley in 1940, naming it after the Greek astatos (ἄστατος), "unstable". Six isotopes of astatine were subsequently found in nature, although it is the least abundant of all the naturally occurring elements, with much less than one gram being present at any given time in the Earth's crust. Neither the most stable isotope astatine-210 nor the medically useful astatine-211 occur naturally. They can only be produced synthetically, usually by bombarding bismuth-209 with alpha particles.".
- Astatine wikiPageExternalLink books?id=0skQvMEa8EYC.
- Astatine wikiPageExternalLink astatine-halogen-or-metal-part-1.html.
- Astatine wikiPageExternalLink 085.htm.
- Astatine wikiPageID "901".
- Astatine wikiPageLength "75433".
- Astatine wikiPageOutDegree "224".
- Astatine wikiPageRevisionID "683107552".
- Astatine wikiPageWikiLink Absorption_spectroscopy.
- Astatine wikiPageWikiLink Absorption_spectrum.
- Astatine wikiPageWikiLink Adenocarcinoma.
- Astatine wikiPageWikiLink Allred–Rochow_scale.
- Astatine wikiPageWikiLink Alpha_decay.
- Astatine wikiPageWikiLink Alpha_particle.
- Astatine wikiPageWikiLink Amphoterism.
- Astatine wikiPageWikiLink Analytical_chemistry.
- Astatine wikiPageWikiLink Ancient_Greek.
- Astatine wikiPageWikiLink Anion.
- Astatine wikiPageWikiLink Antibody.
- Astatine wikiPageWikiLink Atomic_electron_transition.
- Astatine wikiPageWikiLink Atomic_number.
- Astatine wikiPageWikiLink Atomic_orbital.
- Astatine wikiPageWikiLink Auburn_University.
- Astatine wikiPageWikiLink Band_gap.
- Astatine wikiPageWikiLink Bangladesh.
- Astatine wikiPageWikiLink Base_(chemistry).
- Astatine wikiPageWikiLink Becquerel.
- Astatine wikiPageWikiLink Benzene.
- Astatine wikiPageWikiLink Berkelium.
- Astatine wikiPageWikiLink Berta_Karlik.
- Astatine wikiPageWikiLink Beta_decay.
- Astatine wikiPageWikiLink Bismuth.
- Astatine wikiPageWikiLink Bismuth(III)_nitrate.
- Astatine wikiPageWikiLink Bismuth(III)_oxide.
- Astatine wikiPageWikiLink Bismuth-209.
- Astatine wikiPageWikiLink Bismuth_nitrate.
- Astatine wikiPageWikiLink Bismuth_oxide.
- Astatine wikiPageWikiLink Bismuth_trioxide.
- Astatine wikiPageWikiLink Bisphosphonate.
- Astatine wikiPageWikiLink Bisphosphonates.
- Astatine wikiPageWikiLink Boiling_point.
- Astatine wikiPageWikiLink Bone_metastasis.
- Astatine wikiPageWikiLink Boron.
- Astatine wikiPageWikiLink British_India.
- Astatine wikiPageWikiLink Bromide.
- Astatine wikiPageWikiLink Bromine.
- Astatine wikiPageWikiLink Cancer.
- Astatine wikiPageWikiLink Category:Astatine.
- Astatine wikiPageWikiLink Category:Halogens.
- Astatine wikiPageWikiLink Category:Metalloids.
- Astatine wikiPageWikiLink Cathode.
- Astatine wikiPageWikiLink Chalcogen.
- Astatine wikiPageWikiLink Chelating_agent.
- Astatine wikiPageWikiLink Chelation.
- Astatine wikiPageWikiLink Chemical_compound.
- Astatine wikiPageWikiLink Chemical_element.
- Astatine wikiPageWikiLink Chemical_symbol.
- Astatine wikiPageWikiLink Chlorine.
- Astatine wikiPageWikiLink Chloroform.
- Astatine wikiPageWikiLink Chromate_and_dichromate.
- Astatine wikiPageWikiLink Close-packing_of_equal_spheres.
- Astatine wikiPageWikiLink Cold_trap.
- Astatine wikiPageWikiLink Colloid.
- Astatine wikiPageWikiLink Coprecipitation.
- Astatine wikiPageWikiLink Cubic_close_packed.
- Astatine wikiPageWikiLink Cyclotron.
- Astatine wikiPageWikiLink Dale_R._Corson.
- Astatine wikiPageWikiLink Decay_chain.
- Astatine wikiPageWikiLink Decay_product.
- Astatine wikiPageWikiLink Dehalogenation.
- Astatine wikiPageWikiLink Dhaka.
- Astatine wikiPageWikiLink Diatomic.
- Astatine wikiPageWikiLink Diatomic_molecule.
- Astatine wikiPageWikiLink Dibutyl_ether.
- Astatine wikiPageWikiLink Dichromate.
- Astatine wikiPageWikiLink Diisopropyl_ether.
- Astatine wikiPageWikiLink Dmitri_Mendeleev.
- Astatine wikiPageWikiLink Dysplasia.
- Astatine wikiPageWikiLink EDTA.
- Astatine wikiPageWikiLink Electron_affinity.
- Astatine wikiPageWikiLink Electron_capture.
- Astatine wikiPageWikiLink Electron_configuration.
- Astatine wikiPageWikiLink Electronegativity.
- Astatine wikiPageWikiLink Electronvolt.
- Astatine wikiPageWikiLink Electroplating.
- Astatine wikiPageWikiLink Emilio_G._Segrè.
- Astatine wikiPageWikiLink Emilio_Segrè.
- Astatine wikiPageWikiLink Enthalpy_of_vaporization.
- Astatine wikiPageWikiLink Ethylenediaminetetraacetic_acid.
- Astatine wikiPageWikiLink Excited_state.
- Astatine wikiPageWikiLink Extrapolation.
- Astatine wikiPageWikiLink Fluorine.
- Astatine wikiPageWikiLink Francium.
- Astatine wikiPageWikiLink Fred_Allison.
- Astatine wikiPageWikiLink Friedrich_Paneth.
- Astatine wikiPageWikiLink Giga-.
- Astatine wikiPageWikiLink Ground_state.
- Astatine wikiPageWikiLink Half-life.
- Astatine wikiPageWikiLink Halogen.
- Astatine wikiPageWikiLink Halogenation.