Livermorium

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Livermorium
116Lv
Po

Lv

(Usn)
ununpentiumlivermoriumununseptium
Appearance
unkent
General properties
Name, seembol, nummer livermorium, Lv, 116
Pronunciation /ˌlɪvərˈmɔəriəm/
LIV-ər-MOHR-ee-əm
Element category unkent
Group, period, block 16 (chalcogens), 7, p
Staundart atomic wicht [293]
Electron confeeguration [Rn] 5f14 6d10 7s2 7p4
(predicted)[1]
2, 8, 18, 32, 32, 18, 6
(predicted)
Electron shells of livermorium (2, 8, 18, 32, 32, 18, 6(predicted))
History
Namin after Lawrence Livermore Naitional Laboratory,[2] itself named pairtly efter Livermore, Californie
Discovery Joint Institute for Nuclear Research an Lawrence Livermore Naitional Laboratory (2000)
Physical properties
Density (near r.t.) 12.9 (predictit)[1] g·cm−3
Atomic properties
Oxidation states 2, 4 (prediction)[1]
Ionization energies 1st: 723.6 (prediction)[1] kJ·mol−1
Covalent radius 175 (estimated)[3] pm
Miscellanea
CAS registry nummer 54100-71-9
Most stable isotopes
Main article: Isotopes o livermorium
iso NA hauf-life DM DE (MeV) DP
293Lv syn 61 ms α 10.54 289Fl
292Lv syn 18 ms α 10.66 288Fl
291Lv syn 18 ms α 10.74 287Fl
290Lv syn 7.1 ms α 10.84 286Fl
· r

Livermorium is the seenthetic superhivy element wi the seembol Lv an atomic nummer 116. The name wis adoptit bi IUPAC on Mey 30, 2012.[2]

It is placed as the hiviest member o groop 16 (VIA) altho a sufficiently stable isotope is nae kent at this time tae allae chemical experiments tae confirm its poseetion as a hivier homologue tae polonium.

It wis first detectit in 2000. Syne then, aboot 35 atoms o livermorium hae been produced, either directly or as a decay product o ununoctium, belangin tae the fower neighbouring isotopes wi masses 290–293. The maist stable isotope kent is livermorium-293 wi a hauf-life o ~60 ms.

References[eedit | eedit soorce]

  1. 1.0 1.1 1.2 1.3 Haire, Richard G. (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. 
  2. 2.0 2.1 "Element 114 is Named Flerovium and Element 116 is Named Livermorium". IUPAC. 30 May 2012. 
  3. Chemical Data. Livermorium - Lv, Royal Chemical Society

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