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Elkahia gemstone emblemElkahia GemstoneEST. 2026 · QATAR
114Fl290.192

Element record / Post-transition metal

Flerovium

MetalPrimarily synthetic supply
Atomic number
114
Atomic mass (u)
290.192
Category
Post-transition metal
Standard state
Expected to be a Solid
Melting point
Not reported
Boiling point
Not reported
Density (g/cm³)
Not reported in this source
Electronegativity (Pauling)
Not reported in this source
Electron configuration
[Rn]7s2 7p2 5f14 6d10 (predicted)
Oxidation states
6, 4,2, 1, 0
Atomic radius (pm)
Not reported in this source
First ionization energy (eV)
Not reported in this source

Discovery & recognition

Discovery year / period (PubChem)
1998
Discovery credited to (RSC)
Scientists from the Joint Institute for Nuclear Research in Dubna, Russia and the Lawrence Livermore National Laboratory, California, USA.
Date or period recorded by RSC
1999
Discovery place
Joint Institute for Nuclear Research, Russia

An ancient date does not identify a first human discovery. Different references may date observation, isolation and formal recognition differently.

Natural occurrence & production

This transuranium element is primarily produced through nuclear reactions in reactors or particle accelerators. Some transuranium elements also occur naturally in extremely small traces; that is different from a mineable deposit.

“Flerovium can be formed in nuclear reactors.”

Royal Society of Chemistry · occurrence excerpt ↗

Continue the research

Reference values are not product specifications. Blank values have not been estimated. For superheavy elements, some properties and family assignments are theoretical or incompletely measured.

Reference snapshot: September 2026. Source dates and uncertainties are retained in the record.