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Flerovio

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  • 1. 114Flerovio – FleroviumMass: 289u[Rn] 5f14 6d10 7s2 7p2 Melting point: 340 kBoiling point: 420 kDensity (predicted): 22 g·cm-3Discovery: Joint Institute andLawrence Livermore , 1999About 80 decays of atoms of flerovium have been observed todate, 50 directly and 30 from the decay of the heavier elementslivermorium and ununoctium. All decays have been assigned to the fiveneighbouring isotopes with mass numbers 285–289. The longest-livedisotope currently known is Fl with a half-life of ~2.6 s, although there isevidence for a nuclear isomer, Fl, with a half-life of ~66 s, that wouldbe one of the longest-lived nuclei in the superheavy element region.

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