ElementsWhat is flerovium?
Flerovium is a radioactive element made in particle accelerators, a few atoms at a time.
What is flerovium used for?
Research only.
Where the name comes from
From the Flerov Laboratory of Nuclear Reactions in Dubna, Russia, named after the physicist Georgy Flerov.
Key facts
- Symbol
- Fl
- Atomic number
- 114
- Atomic mass
- 290.192 u
- Family
- Post-transition metal
- Period
- 7
- Group
- 14
- Block
- p
- State at room temperature
- Solid (expected)
- Melting point
- not measured
- Boiling point
- not measured
- Density
- not measured
- Electrons per shell
- 2, 8, 18, 32, 32, 18, 4
- Electron configuration
- [Rn]7s2 7p2 5f14 6d10
- Common oxidation states
- 6, 4, 2, 1, 0
- Electronegativity (Pauling)
- no value
- First ionisation energy
- not measured
- Electron affinity
- no value
- Atomic radius (van der Waals)
- no value
- Discovered
- 1998
Place in the periodic table
Flerovium is element number 114. It sits in period 7 (row 7) of the periodic table, in group 14 (column 14), and belongs to the p-block. Just before it comes nihonium (113), and just after it comes moscovium (115). In the same column, lead is above it. Elements in one column tend to behave alike.
Family: Post-transition metals.
Physical properties
Too few atoms of flerovium have been made to measure its bulk properties. It is expected to be a solid at room temperature.
Inside the atom
An atom of flerovium has 114 protons in its nucleus and, when neutral, 114 electrons around it. The electrons are arranged in 7 shells: 2, 8, 18, 32, 32, 18, 4. The outermost shell holds 4 electrons. Written in full, the electron configuration is [Rn]7s2 7p2 5f14 6d10 (predicted).
One mole of flerovium weighs 290.192 grams, so a single gram contains about 2.08 × 1021 atoms.
The ring picture is a simple model that only counts the electrons in each shell. Real atoms do not look like this.
Next steps
- Work out the weight of a compound that contains flerovium with the molar mass calculator.
- Compare it with every other element in the sortable list.
- Test yourself with the symbol quiz.
Figures on this page are from PubChem (U.S. National Library of Medicine), as downloaded on 11 November 2026. See About and data sources.