Oganesson

Atomic number

118

Atomic mass (u)

295.216

Category

Noble gas

Standard state

Expected to be a Gas

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 7p6 5f14 6d10 (predicted)

Oxidation states

+6, +4, +2, +1, 0, -1

Atomic radius (pm)

Not reported in this source

First ionization energy (eV)

Not reported in this source

Discovery & recognition

Discovery year / period (PubChem)

2006

Discovery credited to (RSC)

Scientists from the Joint Institute for Nuclear Research in Dubna, Russia, and the Lawrence Livermore National Laboratory in California, USA

Date or period recorded by RSC

2006

Discovery place

Not supplied in the structured record; see the RSC history source.

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.

“Unknown”

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.