Is flerovium a metal?

Flerovium's chemical category has not been confirmed by experiment, so it is listed with unclassified properties.

How many protons does flerovium have?

Flerovium has 114 protons. Its atomic number is 114, which is also the number of electrons in a neutral atom of flerovium.

What group and period is flerovium in?

Flerovium is in group 14 and period 7 of the periodic table, in the p-block.

What is the atomic mass of flerovium?

The atomic mass of flerovium is 289 u (unified atomic mass units).

Element 114

Flerovium (Fl)

Element with unclassified properties · Period 7 · Group 14 · p-block

Flerovium (Fl) is element 114 of the periodic table, an element with unclassified properties in period 7, group 14 (p-block) with an atomic mass of 289 and is a solid at standard conditions.

At a glance

Atomic number: 114
Symbol: Fl
Atomic mass: 289 u
Category: Unclassified properties
Period: 7
Group: 14
Block: p-block
Phase at STP: solid

Electron structure

Electron configuration: 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d10 6s2 6p6 5f14 6d10 7s2 7p2
Shorthand configuration: [Rn] 5f14 6d10 7s2 7p2
Electrons per shell: 2, 8, 18, 32, 32, 18, 4
Oxidation states: +2, +4

Physical properties

Flerovium has only ever been produced in quantities too small to weigh or observe in bulk. The physical and atomic values below are theoretical predictions from periodic trends and relativistic calculations, not measurements.

Melting point: 340 K (66.85 °C) (predicted)
Boiling point: 420 K (146.85 °C) (predicted)
Density: 14 g/cm³ (predicted)
Phase: solid

Atomic properties

Covalent radius: 143 pm (predicted)
First ionization energy: 832 kJ/mol (predicted)

Notable isotopes

Notable isotopes of Flerovium: mass number, atomic mass, natural abundance, and stability.
Isotope	Mass	Abundance	Stability
Fl-289	289.19042	-	Half-life 1.9 seconds

Common uses

Scientific research only

Discovery

Year: 1998
Discovered by: Joint Institute for Nuclear Research, Lawrence Livermore National Laboratory
Country: Russia/USA

Frequently asked questions

Is flerovium a metal?: Flerovium's chemical category has not been confirmed by experiment, so it is listed with unclassified properties.
How many protons does flerovium have?: Flerovium has 114 protons. Its atomic number is 114, which is also the number of electrons in a neutral atom of flerovium.
What group and period is flerovium in?: Flerovium is in group 14 and period 7 of the periodic table, in the p-block.
What is the atomic mass of flerovium?: The atomic mass of flerovium is 289 u (unified atomic mass units).

Keep exploring

Flerovium's row is on the printable element property sheet, and its tile is on the periodic table wall chart - the same numbers as above, laid out for A4 or A3 paper.