Element 114
Flerovium (Fl)
Flerovium (Fl) is element 114 of the periodic table, a element with unclassified properties in period 7, group 14 (p-block) with an atomic mass of 289 and is a solid at standard conditions.
At a glance
- Atomic number
- 114
- Symbol
- Fl
- Atomic mass
- 289 u
- Category
- Unclassified properties
- Period
- 7
- Group
- 14
- Block
- p-block
- Phase at STP
- solid
Electron structure
- Electron configuration
- 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d10 6s2 6p6 5f14 6d10 7s2 7p2
- Shorthand configuration
- [Rn] 5f14 6d10 7s2 7p2
- Electrons per shell
- 2, 8, 18, 32, 32, 18, 4
- Oxidation states
- +2, +4
Physical properties
- Melting point
- 340 K
- Boiling point
- 420 K
- Density
- 14 g/cm3
- Phase
- solid
Atomic properties
- Covalent radius
- 143 pm
- First ionization energy
- 832 kJ/mol
Notable isotopes
| Isotope | Mass | Abundance | Stability |
|---|---|---|---|
| Fl-289 | 289.19042 | — | Half-life 1.9 seconds |
Common uses
- Scientific research only
Discovery
- Year
- 1998
- Discovered by
- Joint Institute for Nuclear Research, Lawrence Livermore National Laboratory
- Country
- Russia/USA