Flerovium (Fl)
Isotopes of Flerovium
| Isotope | Atomic Mass | Half-life | Mode of Decay |
| Fl-285 | 285 | 0.00058 seconds | α to Cn-281 |
| Fl-286 | 286 | 0.10 seconds | SF |
| Fl-287 | 287 | 5.00 seconds | α to Cn-283 |
| Fl-288 | 288 | 6.00 seconds | α to Cn-284 |
| Fl-289 | 289 | 21.00 seconds | α to Cn-285 |
Flerovium was discovered by workers in 1998 at the Nuclear Institute in Dubna, Russia. It was named for the Flerov Laboratory of Nuclear Reactions, where “element 114” was synthesized. The lab, in turn, was named in honor of Georgiy N. Flerov, an eminent physicist who discovered the spontaneous fission of uranium. He was also the founder of the Joint Institute for Nuclear Research.
Recent research results show that flerovium's reaction with gold is similar to that of copernicium, showing that it is a very volatile element that may even be gaseous at standard temperature and pressure, and that while it would show metallic properties, consistent with its being the heavier homologue of lead, it would also be the least reactive metal in group 14.
Properties of Flerovium
| Name | Flerovium |
| Symbol | Fl |
| Atomic number | 114 |
| Atomic weight | [289] |
| Standard state | Presumably a solid at 298 °K |
| CAS Registry ID | 54085-16-4 |
| Group in periodic table | 14 |
| Group name | None |
| Period in periodic table | 7 |
| Block in periodic table | p-block |
| Color | Unknown, but probably metallic and silvery white or gray in appearance |
| Classification | Metallic |
| Melting point | 67 °C (predicted) |
| Boiling point | 147 °C |
| Heat of vaporization | 38 (predicted) kJ·mol-1 |
| Density of solid | 14 g/cm3 (predicted) |
| Electron configuration | [Rn]5f146d107s27p2 |
| Oxidation states | 0, +2, +4 |
