Oganesson

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Oganesson,  118Og
General properties
Alternative names element 118, eka-radon
Mass nummer 294 (most stable isotope)
Oganesson in the periodic cairt
Hydrogen Helium
Lithium Beryllium Boron Carbon Nitrogen Oxygen Fluorine Neon
Sodium Magnesium Aluminium Silicon Phosphorus Sulfur Chlorine Argon
Potassium Calcium Scandium Titanium Vanadium Chromium Manganese Airn Cobalt Nickel Capper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton
Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Palladium Siller (element) Cadmium Indium Tin Antimony Tellurium Iodine Xenon
Caesium Barium Lanthanum Cerium Praseodymium Neodymium Promethium Samarium Europium Gadolinium Terbium Dysprosium Holmium Erbium Thulium Ytterbium Lutetium Hafnium Tantalum Tungsten Rhenium Osmium Iridium Platinum Gowd Mercur (element) Thallium Leid (element) Bismuth Polonium Astatine Radon
Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium Americium Curium Berkelium Californium Einsteinium Fermium Mendelevium Nobelium Lawrencium Rutherfordium Dubnium Seaborgium Bohrium Hassium Meitnerium Darmstadtium Roentgenium Copernicium Ununtrium Flerovium Ununpentium Livermorium Ununseptium Ununoctium
Rn

Og

(Usb)
tennessineoganessonununennium
Atomic nummer (Z) 118
Group group 18
Period period 7
Element category   unknown chemical properties
Block p-block
Electron confeeguration [Rn] 5f14 6d10 7s2 7p6 (predictit)[1][2]
Electrons per shell
2, 8, 18, 32, 32, 18, 8 (predictit)
Pheesical properties
Phase (at STP) solit (predicted)[1]
Bylin pynt 350±30 K ​(80±30 °C, ​170±50 °F) (extrapolatit)[1]
Density when liquid (at m.p.) 4.9–5.1 g/cm3 (predictit)[3]
Creetical pynt 439 K, 6.8 MPa (extrapolatit)[4]
Heat o fusion 23.5 kJ/mol (extrapolatit)[4]
Heat o vapourisation 19.4 kJ/mol (extrapolatit)[4]
Atomic properties
Oxidation states −1,[2] 0, +1,[5] +2,[6] +4,[6] +6[2] (predictit)
Ionisation energies
  • 1st: 839.4 kJ/mol (predictit)[2]
  • 2nd: 1563.1 kJ/mol (predictit)[7]
Covalent radius 157 pm (predictit)[8]
Miscellanea
CAS Nummer 54144-19-3[9]
History
Namin IUPAC seestematic element name
Diskivery Jynt Institute for Nuclear Research an Lawrence Livermore Naitional Laboratory (2002)
Main isotopes o oganesson
Iso­tope Abun­dance Hauf-life (t1/2) Decay mode Pro­duct
294Og[10] syn ~0.89 ms α 290Lv
SF
| references | in Wikidata

Oganesson is a superhivy airtifeecial chemical element wi an atomic nummer o 118 an a seembol o Og.

References[eedit | eedit soorce]

  1. 1.0 1.1 1.2 Nash, Clinton S. (2005). "Atomic and Molecular Properties of Elements 112, 114, and 118". Journal of Physical Chemistry A. 109 (15): 3493–3500. doi:10.1021/jp050736o. PMID 16833687. 
  2. 2.0 2.1 2.2 2.3 Hoffman, Darleane C.; Lee, Diana M.; Pershina, Valeria (2006). "Transactinides and the future elements". In Morss; Edelstein, Norman M.; Fuger, Jean. The Chemistry of the Actinide and Transactinide Elements (3rd ed.). Dordrecht, The Netherlands: Springer Science+Business Media. ISBN 1-4020-3555-1. 
  3. Bonchev, Danail; Kamenska, Verginia (1981). "Predicting the Properties of the 113–120 Transactinide Elements". Journal of Physical Chemistry. American Chemical Society. 85 (9): 1177–1186. doi:10.1021/j150609a021. 
  4. 4.0 4.1 4.2 Eichler, R.; Eichler, B., Thermochemical Properties of the Elements Rn, 112, 114, and 118 (PDF), Paul Scherrer Institut, retrieved 2010-10-23 
  5. Han, Young-Kyu; Bae, Cheolbeom; Son, Sang-Kil; Lee, Yoon Sup (2000). "Spin–orbit effects on the transactinide p-block element monohydrides MH (M=element 113–118)". Journal of Chemical Physics. 112 (6): 2684. Bibcode:2000JChPh.112.2684H. doi:10.1063/1.480842. 
  6. 6.0 6.1 Kaldor, Uzi; Wilson, Stephen (2003). Theoretical Chemistry and Physics of Heavy and Superheavy Elements. Springer. p. 105. ISBN 140201371X. Retrieved 2008-01-18. 
  7. Fricke, Burkhard (1975). "Superheavy elements: a prediction of their chemical and physical properties". Recent Impact of Physics on Inorganic Chemistry. 21: 89–144. doi:10.1007/BFb0116498. Retrieved 4 October 2013. 
  8. Chemical Data. Ununoctium - Uuo, Royal Chemical Society
  9. "Ununoctium". WebElements Periodic Table. Retrieved 2007-12-09. 
  10. Oganessian, Yu. Ts.; Utyonkov, V. K.; Lobanov, Yu. V.; Abdullin, F. Sh.; Polyakov, A. N.; Sagaidak, R. N.; Shirokovsky, I. V.; Tsyganov, Yu. S.; et al. (2006-10-09). "Synthesis of the isotopes of elements 118 and 116 in the 249Cf and 245Cm+48Ca fusion reactions". Physical Review C. 74 (4): 044602. Bibcode:2006PhRvC..74d4602O. doi:10.1103/PhysRevC.74.044602. Retrieved 2008-01-18.