Search

Oganesson

(Reguidit frae Ununoctium)

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

Oganesson, 118Og
Oganesson
Pronunciation/ˌoʊɡəˈnɛsən/ ​(OH-gə-NES-ən[1])
Alternative nameselement 118, eka-radon
Mass number[294]
Oganesson in the periodic cairt
HydrogenHelium
LithiumBerylliumBoronCarbonNitrogenOxygenFluorineNeon
SodiumMagnesiumAluminiumSiliconPhosphorusSulfurChlorineArgon
PotassiumCalciumScandiumTitaniumVanadiumChromiumManganeseAirnCobaltNickelCapperZincGalliumGermaniumArsenicSeleniumBromineKrypton
RubidiumStrontiumYttriumZirconiumNiobiumMolybdenumTechnetiumRutheniumRhodiumPalladiumSiller (element)CadmiumIndiumTinAntimonyTelluriumIodineXenon
CaesiumBariumLanthanumCeriumPraseodymiumNeodymiumPromethiumSamariumEuropiumGadoliniumTerbiumDysprosiumHolmiumErbiumThuliumYtterbiumLutetiumHafniumTantalumTungstenRheniumOsmiumIridiumPlatinumGowdMercur (element)ThalliumLeid (element)BismuthPoloniumAstatineRadon
FranciumRadiumActiniumThoriumProtactiniumUraniumNeptuniumPlutoniumAmericiumCuriumBerkeliumCaliforniumEinsteiniumFermiumMendeleviumNobeliumLawrenciumRutherfordiumDubniumSeaborgiumBohriumHassiumMeitneriumDarmstadtiumRoentgeniumCoperniciumUnuntriumFleroviumUnunpentiumLivermoriumUnunseptiumUnunoctium
Rn
↑
Og
↓
(Usb)
tennessine ← oganesson → ununennium
Atomic nummer (Z)118
Groupgroup 18
Periodperiod 7
Blockp-block
Element category  Unkent chemical properties
Electron confeeguration[Rn] 5f14 6d10 7s2 7p6 (predictit)[2][3]
Electrons per shell2, 8, 18, 32, 32, 18, 8 (predictit)
Pheesical properties
Phase at STPsolit (predicted)[2]
Bylin pynt350±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 pynt439 K, 6.8 MPa (extrapolatit)[5]
Heat o fusion23.5 kJ/mol (extrapolatit)[5]
Heat o vapourisation19.4 kJ/mol (extrapolatit)[5]
Atomic properties
Oxidation states(−1),[3] (0), (+1),[6] (+2),[7] (+4),[7] (+6)[3] (predicted)
Ionisation energies
  • 1st: 839.4 kJ/mol (predictit)[3]
  • 2nd: 1563.1 kJ/mol (predictit)[8]
Covalent radius157 pm (predictit)[9]
Ither properties
Naitural occurrencesynthetic
CAS Nummer54144-19-3[10]
History
NaminIUPAC seestematic element name
DiskiveryJynt Institute for Nuclear Research an Lawrence Livermore Naitional Laboratory (2002)
Main isotopes o oganesson
Iso­topeAbun­danceHauf-life (t1/2)Decay modePro­duct
294Og[11]syn~0.89 msα290Lv
SF
| references

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]

References

Taen frae "https:https://www.search.com.vn/wiki/index.php?lang=sco&q=Oganesson&oldid=884731"
🔥 Top keywords: Main PageAshley StorrieCarles PuigdemontMarie AntoinetteSpecial:RecentChangesSpecial:SearchWikipedia:Commonty YettWikipedia:Contact usJaney GodleyScots leidFile:Nvidia logo.svgFile:KFC logo.svgWarld War IISuzuki EsteemWikipedia:AbootThe Lion KingFile:FC Barcelona (crest).svgHelp:ContentsFacebookKFCFile:Starbucks Corporation Logo 2011.svgFile:Manchester City FC badge.svgConstellationWikipedia:General disclamationPortal:Current eventsWikipaediaToyota AgyaSpecial:MyTalkWikipedia:Mercat CrossContact lensWikipedia:Apryle 2024 Writin DriveFile:Real Madrid CF.svgThe Selkirk GraceChief executive officerUiser collogue:AmaryllisGardenerGujaratWikipedia:Walcome, ane an awScotlandJordan Frieda