NO. 114Unknown

Fl

Flerovium

Flerovium is a superheavy element predicted to be very weakly reactive due to relativistic electron effects.

Crystal Structure

Face-centered cubic (predicted)

Atomic Mass289 u

Density14 g/cm³

Melting Point340 K

Boiling Point210 K

Atomic Radius143 pm

Electronegativity2

Ionization Energy800 kJ/mol

Electron Affinity0 kJ/mol

Bonding TypeMetallic

Oxidation States2, 4

Acid/BaseNeutral

ReactivityLow

Electron Configuration

[Rn] 5f14 6d10 7s2 7p2

Discovered ByJoint Institute for Nuclear Research

Year1998

Known Isotopes

Fl-289