Fl
Flerovium
Element 114 · Post-transition metal
Flerovium (Fl)
Flerovium is a synthetic superheavy element. Experiments suggest it is a volatile metal.
- Post-transition metal
- Period 7
- Group 14
- p-block
- solid at room temperature
- ☢ Radioactive
Key properties
- Atomic mass
- [290]
- u
- Electron configuration
- [Rn] 5f14 6d10 7s2 7p2
- Melting point
- 66.9 °C
- 340 K
- Boiling point
- 146.9 °C
- 420 K
- Density
- 14 g/cm³
- Electronegativity
- —
- Atomic radius
- —
- 1st ionisation energy
- —
Superheavy elements have only been made a few atoms at a time. Most properties shown are theoretical predictions.
Compare with every element:Electronegativity chartAtomic radius chartIonisation energy chartDensity chart of the elementsMelting point chartElectron configuration chart
Did you know?
Notable facts about flerovium
- 01
It sits near the predicted “island of stability” of superheavy nuclei.
- 02
It was made by fusing plutonium-244 with calcium-48.
- 03
Its chemistry may resemble a noble gas more than its neighbour lead.
Applications
What is flerovium used for?
- Research
History
Discovery & name origin
Discovered by
Year
Where
Russia
Name origin
From the Flerov Laboratory of Nuclear Reactions, named after Georgy Flerov.
Atomic structure
Atomic properties
Atomic structure
Atomic properties
- Atomic number
- 114
- Atomic mass
- [290] u
- Group
- 14
- Period
- 7
- Block
- p-block
- Electron configuration
- [Rn] 5f14 6d10 7s2 7p2
- Full configuration
- 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f14 6d10 7p2
- Electrons per shell
- 2, 8, 18, 32, 32, 18, 4
- Electronegativity (Pauling)
- —
- Electron affinity
- —
- Atomic radius (van der Waals)
- —
- Stable isotopes
- None — all isotopes are radioactive
Oxidation states
Highlighted: common oxidation states (+6, +4, +2, +1, 0).
Physical
Physical properties & colour
Physical
Physical properties & colour
- State at 20 °C
- Solid (predicted)
- Melting point
- 340 K · 66.9 °C · 152.3 °F
- Boiling point
- 420 K · 146.9 °C · 296.3 °F
- Density
- 14 g/cm³
- Molar heat capacity
- —
- Appearance
- —
- CPK model colour
- —
The CPK colour is the convention used for this element’s atoms in molecular models.
FAQ
Flerovium questions
What is Fl on the periodic table?
Fl is the symbol for flerovium, element 114 on the periodic table. It sits in group 14, period 7, in the post-transition metal category, and has an atomic mass of [290].
What is the atomic number of flerovium?
Flerovium has atomic number 114, so every flerovium atom has 114 protons in its nucleus. Its symbol is Fl and its atomic mass is [290].
Who discovered flerovium?
Flerovium was discovered by Yuri Oganessian in 1998 (Russia). The name comes from from the Flerov Laboratory of Nuclear Reactions, named after Georgy Flerov.
What is flerovium used for?
Flerovium is used for: research.
Is flerovium a metal?
Yes. Flerovium is a post-transition metal, one of the metallic elements.
What is the electron configuration of flerovium?
The electron configuration of flerovium is [Rn] 5f14 6d10 7s2 7p2 (predicted). Its 114 electrons are arranged in shells as 2, 8, 18, 32, 32, 18, 4.