Periodic Table of Elements

114

Flerovium

289.19

Flerovium was first made in Dubna, Russia in 1998.

Name: Flerovium
Symbol: Fl
Atomic number: 114
Atomic weight: 289.19
State: presumably a solid
Group, period, block: 14, 7, p
Color: unknown
Classification: unknown presumably post-transition metals
Electron configuration: 5f14 6d10 7s2 7p2
2,8,18,32,32,18,4

Physical properties

Density: 22 g/cm-3
Melting point: 340 K,70 C,160 (predicted) F
Boiling point: 420 K,150 C,300 (predicted) F

Atomic properties

Oxidation states: 2, 4
Electronegativity: no data
Ionization energies: 1st: 823.9 kJmol-1
Covalent radius: 143 pm
Van der Waals radius: no data
  • Fl
  • Electron Configuration

Isotopes

Flerovium is an artificial element, and thus a standard atomic mass cannot be given. Like all artificial elements, it has no stable isotopes. The first synthesized isotope was 289Fl in around 1999. Flerovium has five confirmed isotopes, and possibly 2 nuclear isomers. The longest-lived isotope is 289Fl with a half-life of 2.6 seconds.