Flerovium

1 · Identity

Symbol, number

Fl, 114

Oxidation states in water

6, 4, 2, 1 and 0 listed (book entry)

Note

Identity from the book entry; nothing measured in water.

Sources

Identity

Name and symbol

Flerovium, Fl

Atomic number

114 protons

Position

group 14 · period 7 · p-block · post-transition metal

CAS number

54085-16-4

Atomic structure

Atomic mass

289 u

Electron configuration

1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 6s² 4f¹⁴ 5d¹⁰ 6p⁶ 7s² 5f¹⁴ 6d¹⁰ 7p²
[Rn] 7s²⁷p² 5f¹⁴ 6d¹⁰(predicted)

Electrons per shell

2, 8, 18, 32, 32, 18, 4

Valence electrons

4 outer shell

Physical properties

State at room temperature

Expected to be a Solid

Melting point

not in sources

Boiling point

not in sources

Density

not in sources

Appearance

not in sources

Thermal conductivity

not in sources

Electrical resistivity

not in sources

Electrical conductivity

not in sources

Crystal structure

not in sources

Molar heat capacity

not in sources

Chemical properties

Oxidation states

0, 1, 2, 4, 6 ​(predicted)

Electronegativity

not in sources

Ionisation energy

not in sources

Electron affinity

not in sources

Atomic radius

not in sources

Ionic radius

not in sources

Reactivity

A group 14 transactinide whose only chemistry is adsorption of single atoms on gold: experiments since 2012, and 2022 results in particular, indicate a volatile but metallic element, less reactive toward gold than mercury but more than radon, and the least reactive member of its group.

with water

Not known; no experiment has been reported.

with oxygen, air

Not known; the 2022 experiment could not tell whether the adsorbed species was the element or an oxide such as FlO.

with acids

Not known; no experiment has been reported.

with halogens

Not known; no experiment has been reported.

Typical compounds

not in sources

Occurrence, production and use

Crustal abundance

Not Applicable

Oceanic abundance

Not Applicable

Occurrence and sources

• synthetic only plutonium bombarded with calcium at Dubna

Extraction, production

not in sources

Uses

Since only a few atoms of flerovium have ever been produced, it currently has no uses outside of basic scientific research.

Safety, toxicity

not in sources

Discovery and name

Discovered by

Joint Institute for Nuclear Research (JINR) and Lawrence Livermore National Laboratory (LLNL)

Discovered

1999

First isolated

not in sources

Named by

not in sources

Origin of the name

after the Flerov Laboratory of Nuclear Reactions of the Joint Institute for Nuclear Research (itself named after Georgy Flyorov){{cite press release

Flerovium does not occur naturally in the Earth’s crust. Flerovium was named for the Flerov Laboratory for Nuclear Reactions of the Joint Institute for Nuclear Research (JIRN). In 1999, a collaboration of scientists from the Joint Institute for Nuclear Research in Dubna, Russia (Figs. 4.114.1 and 4.114.2) and the Lawrence Livermore Laboratory in the USA synthesized flerovium. They used nuclear reaction experiments to eventually produce 287Fl by cross-bombardments of 48Ca with both (even-A) 242Pu and (odd-A) 245Cm. The intermediate nuclide 283Cn was observed with known decay characteristics that established the synthesis of flerovium [668], [669]. Flerovium has no known isotopic applications aside from scientific research.