Template:Infobox oganesson

Oganesson,  118Og
General properties
PronunciationTemplate:Infobox element/pronunciation
Standard atomic weight (Ar, standard)Template:Infobox element/standard atomic weight
Mass numberTemplate:Infobox element/symbol-to-most-stable-isotope (most stable isotope) (unconfirmed: 295)
Oganesson in the periodic table
Template:Infobox element/periodic table
Atomic number (Z)118
GroupTemplate:Infobox element/group
Periodperiod 7
Blockp-block
Element categoryTemplate:Infobox element/category format, but probably a noble gas
Electron configuration[Rn] 5f14 6d10 7s2 7p6 (predicted)[1][2]
Electrons per shell
2, 8, 18, 32, 32, 18, 8 (predicted)
Physical properties
Phase at STPsolid (predicted)[1]
Boiling point350±30 K ​(80±30 °C, ​170±50 °F) (extrapolated)[1]
Density when liquid (at m.p.)4.9–5.1 g/cm3 (predicted)[3]
Critical point439 K, 6.8 MPa (extrapolated)[4]
Heat of fusion23.5 kJ/mol (extrapolated)[4]
[[Enthalpy of vaporization|Heat of Template:Engvar]]19.4 kJ/mol (extrapolated)[4]
Atomic properties
Oxidation statesTemplate:Infobox element/symbol-to-oxidation-state
[[Ionization energy|Template:Engvar energies]]
  • 1st: 860.1 kJ/mol (predicted)[5]
  • 2nd: 1560 kJ/mol (predicted)[6]
Covalent radius157 pm (predicted)[7]
Template:Infobox element/spectral lines
Other properties
Crystal structureTemplate:Infobox element/crystal structure
(extrapolated)[8]
CAS Number54144-19-3
History
Namingafter Yuri Oganessian
PredictionNiels Bohr (1922)
DiscoveryJoint Institute for Nuclear Research and Lawrence Livermore National Laboratory (2002)
Main isotopes of oganesson
Template:Infobox element/isotopes table
| references

Template:Infobox element/element navigation Template:Template reference list Expression error: Unrecognized word "template".

  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. Bibcode:2005JPCA..109.3493N. doi:10.1021/jp050736o. PMID 16833687.
  2. Cite error: Invalid <ref> tag; no text was provided for refs named Haire
  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. Pershina, Valeria. "Theoretical Chemistry of the Heaviest Elements". In Schädel, Matthias; Shaughnessy, Dawn (eds.). The Chemistry of Superheavy Elements (2nd ed.). Springer Science & Business Media. p. 154. ISBN 9783642374661.
  6. 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.
  7. Chemical Data. Ununoctium - Uuo, Royal Chemical Society
  8. 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. doi:10.1016/0022-1902(65)80255-X.