Oganesson is a superhivy airtifeecial chemical element wi an atomic nummer o 118 an a seembol o Og .
Oganesson, 118 Oganesson Pronunciation (OH -gə-NES -ən[ 1] Alternative names element 118, eka-radon Mass number [294] Oganesson in the periodic cairt
Atomic nummer (Z ) 118 Group group 18 Period period 7 Block p-block Element category Unkent chemical properties Electron confeeguration [Rn ] 5f14 6d10 7s2 7p6 (predictit) [ 2] [ 3] Electrons per shell 2, 8, 18, 32, 32, 18, 8 (predictit) Pheesical properties Phase at STP solit (predicted) [ 2] Bylin pynt 350±30 K (80±30 °C, 170±50 °F) (extrapolatit) [ 2] Density when liquid (at m.p. ) 4.9–5.1 g/cm3 (predictit) [ 4] Creetical pynt 439 K, 6.8 MPa (extrapolatit) [ 5] Heat o fusion 23.5 kJ/mol (extrapolatit) [ 5] Heat o vapourisation 19.4 kJ/mol (extrapolatit) [ 5] Atomic properties Oxidation states (−1),[ 3] [ 6] +2 [ 7] +4 [ 7] [ 3] (predicted) Ionisation energies 1st: 839.4 kJ/mol (predictit) [ 3] 2nd: 1563.1 kJ/mol (predictit) [ 8] Covalent radius 157 pm (predictit) [ 9] Ither properties Naitural occurrence synthetic CAS Nummer 54144-19-3[ 10] History Namin IUPAC seestematic element name Diskivery Jynt Institute for Nuclear Research an Lawrence Livermore Naitional Laboratory (2002) Main isotopes o oganesson
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It wis recognised bi the International Union of Pure and Applied Chemistry in Januar 2016. It is cried efter Yuri Oganessian , a Russian physicist that wis ahint the discovery o flerovium .[ 12]
↑ Ritter, Malcolm (9 Juin 2016). "Periodic table elements named for Moscow, Japan, Tennessee" . Associated Press. Retrieved 19 December 2017 . ↑ a b c d Nash, Clinton S. (2005). "Atomic and Molecular Properties of Elements 112, 114, and 118". Journal of Physical Chemistry A . 109 (15): 3493–3500. Bibcode :2005JPCA..109.3493N . doi :10.1021/jp050736o . PMID 16833687 . Cite error: Invalid <ref> tag; name "Nash2005" defined multiple times wi different content
↑ a b c d e f g Hoffman, Darleane C.; Lee, Diana M.; Pershina, Valeria (2006). "Transactinides and the future elements". In Morss; Edelstein, Norman M.; Fuger, Jean (eds.). The Chemistry of the Actinide and Transactinide Elements (3rd ed.). Dordrecht, The Netherlands: Springer Science+Business Media . ISBN 978-1-4020-3555-5 Cite error: Invalid <ref> tag; name "Haire" defined multiple times wi different content
↑ 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 . ↑ a b c Eichler, R.; Eichler, B., Thermochemical Properties of the Elements Rn, 112, 114, and 118 (PDF) , Paul Scherrer Institut, retrieved 23 October 2010 ↑ a b 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 . ↑ a b c d Kaldor, Uzi; Wilson, Stephen (2003). Theoretical Chemistry and Physics of Heavy and Superheavy Elements ISBN 978-1402013713 . Retrieved 18 Januar 2008 . Cite error: Invalid <ref> tag; name "Kaldor" defined multiple times wi different content
↑ 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 . ↑ Chemical Data. Ununoctium - Uuo , Royal Chemical Society↑ "Ununoctium" . WebElements Periodic Table. Retrieved 9 December 2007 .↑ 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. (9 October 2006). "Synthesis of the isotopes of elements 118 and 116 in the 249 Cf and 245 Cm+48 Ca fusion reactions" . Physical Review C74 (4): 044602. Bibcode :2006PhRvC..74d4602O . doi :10.1103/PhysRevC.74.044602 . Retrieved 18 Januar 2008 . ↑ Aron, Jacob (8 Juin 2016). "Four new element names to be added to the periodic table" . New Scientist . Retrieved 6 September 2023 .
