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کينډۍ:Infobox astatine

د ويکيپېډيا، وړیا پوهنغونډ له خوا
Astatine,  85At
عمومي خواص
Pronunciation /ˈæstətn/ or /ˈæstətɪn/
AS-tə-teen or AS-tə-tin
Appearanceunknown, probably metallic
Astatine په دوراني جدول کې
Hydrogen (diatomic nonmetal)
Helium (noble gas)
Lithium (alkali metal)
Beryllium (alkaline earth metal)
Boron (metalloid)
Carbon (polyatomic nonmetal)
Nitrogen (diatomic nonmetal)
Oxygen (diatomic nonmetal)
Fluorine (diatomic nonmetal)
Neon (noble gas)
Sodium (alkali metal)
Magnesium (alkaline earth metal)
Aluminium (post-transition metal)
Silicon (metalloid)
Phosphorus (polyatomic nonmetal)
Sulfur (polyatomic nonmetal)
Chlorine (diatomic nonmetal)
Argon (noble gas)
Potassium (alkali metal)
Calcium (alkaline earth metal)
Scandium (transition metal)
Titanium (transition metal)
Vanadium (transition metal)
Chromium (transition metal)
Manganese (transition metal)
Iron (transition metal)
Cobalt (transition metal)
Nickel (transition metal)
Copper (transition metal)
Zinc (transition metal)
Gallium (post-transition metal)
Germanium (metalloid)
Arsenic (metalloid)
Selenium (polyatomic nonmetal)
Bromine (diatomic nonmetal)
Krypton (noble gas)
Rubidium (alkali metal)
Strontium (alkaline earth metal)
Yttrium (transition metal)
Zirconium (transition metal)
Niobium (transition metal)
Molybdenum (transition metal)
Technetium (transition metal)
Ruthenium (transition metal)
Rhodium (transition metal)
Palladium (transition metal)
Silver (transition metal)
Cadmium (transition metal)
Indium (post-transition metal)
Tin (post-transition metal)
Antimony (metalloid)
Tellurium (metalloid)
Iodine (diatomic nonmetal)
Xenon (noble gas)
Caesium (alkali metal)
Barium (alkaline earth metal)
Lanthanum (lanthanide)
Cerium (lanthanide)
Praseodymium (lanthanide)
Neodymium (lanthanide)
Promethium (lanthanide)
Samarium (lanthanide)
Europium (lanthanide)
Gadolinium (lanthanide)
Terbium (lanthanide)
Dysprosium (lanthanide)
Holmium (lanthanide)
Erbium (lanthanide)
Thulium (lanthanide)
Ytterbium (lanthanide)
Lutetium (lanthanide)
Hafnium (transition metal)
Tantalum (transition metal)
Tungsten (transition metal)
Rhenium (transition metal)
Osmium (transition metal)
Iridium (transition metal)
Platinum (transition metal)
Gold (transition metal)
Mercury (transition metal)
Thallium (post-transition metal)
Lead (post-transition metal)
Bismuth (post-transition metal)
Polonium (post-transition metal)
Astatine (metalloid)
Radon (noble gas)
Francium (alkali metal)
Radium (alkaline earth metal)
Actinium (actinide)
Thorium (actinide)
Protactinium (actinide)
Uranium (actinide)
Neptunium (actinide)
Plutonium (actinide)
Americium (actinide)
Curium (actinide)
Berkelium (actinide)
Californium (actinide)
Einsteinium (actinide)
Fermium (actinide)
Mendelevium (actinide)
Nobelium (actinide)
Lawrencium (actinide)
Rutherfordium (transition metal)
Dubnium (transition metal)
Seaborgium (transition metal)
Bohrium (transition metal)
Hassium (transition metal)
Meitnerium (unknown chemical properties)
Darmstadtium (unknown chemical properties)
Roentgenium (unknown chemical properties)
Copernicium (transition metal)
Nihonium (unknown chemical properties)
Flerovium (unknown chemical properties)
Moscovium (unknown chemical properties)
Livermorium (unknown chemical properties)
Tennessine (unknown chemical properties)
Oganesson (unknown chemical properties)
 I 

At

Ts
poloniumastatineradon
اټومي شمیره (Z)85
گروپ, پیریودgroup 17 (halogens), period 6
بلاکp-block
Element category  metalloid, sometimes classified as a nonmetal, or a metal[۱][۲]
Mass number210 (most stable isotope)
Electron configuration[Xe] 4f14 5d10 6s2 6p5
Electrons per shell
2, 8, 18, 32, 18, 7
فزیکي خواص
حالت (at STP)جامد
دويلې کيدو ټکى575 K ​(302 °C, ​576 °F)
يشنا ټکی610 K ​(337 °C, ​639 °F)
Density near r.t.(At2) 6.35±0.15 g/cm3 (predicted)[۳]
Molar volume(At2) 32.94 cm3/mol (predicted)[۳]
Heat of vaporization(At2) 54.39 kJ/mol[۴]
Vapor pressure
P (Pa) 1 10 100 1 k 10 k 100 k
at T (K) 361 392 429 475 531 607
اټومي خواص
Oxidation states−1, +1, +3, +5, +7[۵]
ElectronegativityPauling scale: 2.2
Ionization energies
  • 1st: 899.003 kJ/mol[۶]
Covalent radius150 pm
Van der Waals radius202 pm
Miscellanea
Crystal structureface-centered cubic (fcc)
Face-centered cubic crystal structure for astatine
Face-centered cubic crystal structure for astatine

(predicted)[۲]
د تودوخې تېرېدنه1.7 W/(m·K)
CAS Number7440-68-8
History
Namingafter Greek astatos (αστατος), meaning "unstable"
DiscoveryDale R. Corson, Kenneth Ross MacKenzie, Emilio Segrè (1940)
Main isotopes of astatine
آيسو­ټوپ Abun­dance نیم ژوند (t1/2) Decay mode Pro­duct

کينډۍ:Infobox element/isotopes decay2 کينډۍ:Infobox element/isotopes decay2 کينډۍ:Infobox element/isotopes decay2

| references | in Wikidata

Element navigation

astatinePT
Po ←
 
→ Rn

سرچينې

  1. Corson، MacKenzie او Segrè 1940.
  2. ۲٫۰ ۲٫۱ Hermann, A.; Hoffmann, R.; Ashcroft, N. W. (2013). "Condensed Astatine: Monatomic and Metallic". Physical Review Letters. 111 (11): 116404-1–116404-5. Bibcode:2013PhRvL.111k6404H. doi:10.1103/PhysRevLett.111.116404. PMID 24074111.
  3. ۳٫۰ ۳٫۱ Bonchev, D.; Kamenska, V. (1981). "Predicting the Properties of the 113–120 Transactinide Elements". The Journal of Physical Chemistry. 85 (9). ACS Publications: 1177–86. doi:10.1021/j150609a021. بياځلي په 6 May 2013.
  4. Glushko, V. P.; Medvedev, V. A.; Bergma, G. A. (1966). Termicheskie Konstanty Veshchestv (in Russian). Vol. 1. Nakua. p. 65.{{cite book}}: CS1 maint: unrecognized language (link)
  5. Greenwood او Earnshaw 2002، م. 28.
  6. Rothe, S.; Andreyev, A. N.; Antalic, S.; Borschevsky, A.; Capponi, L.; Cocolios, T. E.; De Witte, H.; Eliav, E.; Fedorov, D. V.; Fedosseev, V. N.; Fink, D. A.; Fritzsche, S.; Ghys, L.; Huyse, M.; Imai, N.; Kaldor, U.; Kudryavtsev, Yuri; Köster, U.; Lane, J. F. W.; Lassen, J.; Liberati, V.; Lynch, K. M.; Marsh, B. A.; Nishio, K.; Pauwels, D.; Pershina, V.; Popescu, L.; Procter, T. J.; Radulov, D.; Raeder, S. (2013). "Measurement of the First Ionization Potential of Astatine by Laser Ionization Spectroscopy". Nature Communications. 4: 1–6. doi:10.1038/ncomms2819. PMC 3674244. PMID 23673620. {{cite journal}}: Unknown parameter |displayauthors= ignored (|display-authors= suggested) (help)
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