NO. 118Unknown

Og

Oganesson

Oganesson is the heaviest known element. Despite being a noble gas, it is predicted to be unusually reactive and possibly solid at room temperature.

Crystal Structure

Face-centered cubic (predicted)

Atomic Mass294 u

Density4.9 g/cm³

Melting Point325 K

Boiling Point350 K

Atomic Radius152 pm

Electronegativity2.2

Ionization Energy860 kJ/mol

Electron Affinity0 kJ/mol

Bonding TypeCovalent

Oxidation States0, 2

Acid/BaseNeutral

ReactivityHigh

Electron Configuration

[Rn] 5f14 6d10 7s2 7p6

Discovered ByJoint Institute for Nuclear Research

Year2002

Known Isotopes

Og-294