1. 114
Flerovio – Flerovium
Mass: 289u
[Rn] 5f14
6d10
7s2
7p2
Melting point: 340 k
Boiling point: 420 k
Density (predicted): 22 g·cm-3
Discovery: Joint Institute and
Lawrence Livermore , 1999
About 80 decays of atoms of flerovium have been observed to
date, 50 directly and 30 from the decay of the heavier elements
livermorium and ununoctium. All decays have been assigned to the five
neighbouring isotopes with mass numbers 285–289. The longest-lived
isotope currently known is Fl with a half-life of ~2.6 s, although there is
evidence for a nuclear isomer, Fl, with a half-life of ~66 s, that would
be one of the longest-lived nuclei in the superheavy element region.
![114
Flerovio – Flerovium
Mass: 289u
[Rn] 5f14
6d10
7s2
7p2
Melting point: 340 k
Boiling point: 420 k
Density (predicted): 22 g·cm-3
Discovery: Joint Institute and
Lawrence Livermore , 1999
About 80 decays of atoms of flerovium have been observed to
date, 50 directly and 30 from the decay of the heavier elements
livermorium and ununoctium. All decays have been assigned to the five
neighbouring isotopes with mass numbers 285–289. The longest-lived
isotope currently known is Fl with a half-life of ~2.6 s, although there is
evidence for a nuclear isomer, Fl, with a half-life of ~66 s, that would
be one of the longest-lived nuclei in the superheavy element region.](https://image.slidesharecdn.com/flerovio-130506170749-phpapp02/85/flerovio-1-320.jpg)
