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Oganesson
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General properties | ||||||||||||||||||
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Pronunciation | ||||||||||||||||||
Mass number | 294 (most stable isotope) (unconfirmed: 295) | |||||||||||||||||
Oganesson in the periodic table | ||||||||||||||||||
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Atomic number (Z) | 118 | |||||||||||||||||
Group | group 18 | |||||||||||||||||
Period | period 7 | |||||||||||||||||
Block | p-block | |||||||||||||||||
Element category | unknown chemical properties, but probably a noble gas | |||||||||||||||||
Electron configuration | [Rn] 5f14 6d10 7s2 7p6 (predicted)[2][3] | |||||||||||||||||
Electrons per shell | 2, 8, 18, 32, 32, 18, 8 (predicted) | |||||||||||||||||
Physical properties | ||||||||||||||||||
Phase at STP | Og: Unknown phase (predicted)[2] | |||||||||||||||||
Boiling point | 350±30 K (80±30 °C, 170±50 °F) (extrapolated)[2] | |||||||||||||||||
Density when liquid (at m.p.) | 4.9–5.1 g/cm3 (predicted)[4] | |||||||||||||||||
Critical point | 439 K, 6.8 MPa (extrapolated)[5] | |||||||||||||||||
Heat of fusion | 23.5 kJ/mol (extrapolated)[5] | |||||||||||||||||
Heat of vaporization | 19.4 kJ/mol (extrapolated)[5] | |||||||||||||||||
Atomic properties | ||||||||||||||||||
Oxidation states | (−1),[3] (0), (+1),[6] (+2),[7] (+4),[7] (+6)[3] (predicted) | |||||||||||||||||
Ionization energies | ||||||||||||||||||
Covalent radius | 157 pm (predicted)[10] | |||||||||||||||||
Other properties | ||||||||||||||||||
Natural occurrence | Og: Synthetic | |||||||||||||||||
Crystal structure | face-centered cubic (fcc) (extrapolated)[11] | |||||||||||||||||
CAS Number | 54144-19-3 | |||||||||||||||||
History | ||||||||||||||||||
Naming | after Yuri Oganessian | |||||||||||||||||
Prediction | Niels Bohr (1922) | |||||||||||||||||
Discovery | Joint Institute for Nuclear Research and Lawrence Livermore National Laboratory (2002) | |||||||||||||||||
Main isotopes of oganesson | ||||||||||||||||||
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Oganesson is a synthetic chemical element with symbol Og and atomic number 118.
The element is named in honor of Yuri Oganessian.
It was first created in 2002 at the Joint Institute for Nuclear Research (JINR) in Dubna, Russia by a joint team of Russian and American scientists.
In December 2015, it was recognized as one of four new elements by the Joint Working Party of the international scientific bodies IUPAC and IUPAP. It was formally named on 28 November 2016.[15]
Other websites
- WebElements.com - Oganesson
- Oganesson at The Periodic Table of Videos (University of Nottingham)
References
- ↑ Ritter, Malcolm (9 June 2016). Periodic table elements named for Moscow, Japan, Tennessee. Associated Press. https://apnews.com/bd44f5cccba04d4fbaec96273e06fb45/names-chemical-elements-honor-moscow-japan-tennessee. Retrieved 19 December 2017.
- ↑ 2.0 2.1 2.2 2.3 Nash, Clinton S. (2005). "Atomic and Molecular Properties of Elements 112, 114, and 118". Journal of Physical Chemistry A 109 (15): 3493–3500. . .
- ↑ 3.0 3.1 3.2 3.3 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. .
- ↑ 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. . https://www.researchgate.net/publication/239657207_Predicting_the_properties_of_the_113_to_120_transactinide_elements.
- ↑ 5.0 5.1 5.2 Eichler, R.; Eichler, B., Thermochemical Properties of the Elements Rn, 112, 114, and 118, Paul Scherrer Institut, http://lch.web.psi.ch/files/anrep03/06.pdf, retrieved 2010-10-23
- ↑ 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. .
- ↑ 7.0 7.1 Kaldor, Uzi; Wilson, Stephen (2003). Theoretical Chemistry and Physics of Heavy and Superheavy Elements. Springer. p. 105. . https://books.google.com/books?id=0xcAM5BzS-wC&printsec=frontcover&dq=element+118+properties#PPA105,M1. Retrieved 2008-01-18.
- ↑ Pershina, Valeria. "Theoretical Chemistry of the Heaviest Elements". In Schädel, Matthias; Shaughnessy, Dawn. The Chemistry of Superheavy Elements (2nd ed.). Springer Science & Business Media. p. 154. .
- ↑ Fricke, Burkhard (1975). "Superheavy elements: a prediction of their chemical and physical properties". Recent Impact of Physics on Inorganic Chemistry 21: 89–144. . https://www.researchgate.net/publication/225672062_Superheavy_elements_a_prediction_of_their_chemical_and_physical_properties. Retrieved 4 October 2013.
- ↑ Chemical Data. Ununoctium - Uuo, Royal Chemical Society
- ↑ Grosse, A. V. (1965). "Some physical and chemical properties of element 118 (Eka-Em) and element 86 (Em)". Journal of Inorganic and Nuclear Chemistry (Elsevier Science Ltd.) 27 (3): 509–19. .
- ↑ 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. . http://link.aps.org/abstract/PRC/v74/e044602. Retrieved 2008-01-18.
- ↑ Oganessian, Yuri Ts.; Rykaczewski, Krzysztof P. (August 2015). "A beachhead on the island of stability". Physics Today 68 (8): 32–38. . http://physicstoday.scitation.org/doi/10.1063/PT.3.2880. Retrieved 2017-06-14.
- ↑ (2016) "Remarks on the Fission Barriers of SHN and Search for Element 120" in Exotic Nuclei. : 155–164.
- ↑ Staff (30 November 2016). "IUPAC Announces the Names of the Elements 113, 115, 117, and 118". IUPAC. https://iupac.org/iupac-announces-the-names-of-the-elements-113-115-117-and-118/. Retrieved 1 December 2016.
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