OGANESSON, Og (118)

Oganesson is currently the only synthetic member of group 18. It has the highest atomic number and highest atomic mass of all the elements discovered so far. The radioactive atom is very unstable and since 2005, only four atoms of the isotope 294 Og have been detected.

ELEMENT BRIEF

2002 by Joint Institute for Nuclear Research and Lawrence Livermore National Laboratory.

DISCOVERY

Named after Yuri Oganessian.

ETYMOLOGY

Oganesson

ELEMENT

Og

SYMBOL

118

ATOMIC NUMBER

54144-19-3

CAS NUMBER

ELEMENTAL SPECTRUM

-

ELEMENTAL COLOUR

-

REFRACTIVE INDEX

-

POISSON RATIO

60.044 cm³

MOLAR VOLUME

-

BRINELL HARDNESS

-

MOHS HARDNESS

-

VICKERS HARDNESS

-

SPEED OF SOUND

-

BULK MODULUS

-

SHEAR MODULUS

-

YOUNG MODULUS

ALLOTROPES

NONE

-

MELTING POINT

-

BOILING POINT

-

AUTOMATIC IGNITION

-

FLASHPOINT

-

CRITICAL TEMPERATURE

-

CRITICAL PRESSURE

-

THERMAL CONDUCTIVITY

-

THERMAL EXPANSION

-

SPECIFIC HEAT

-

HEAT FUSION

-

HEAT VAPORISATION

-

HEAT COMBUSTION

-

CURIE POINT

-

NEEL POINT

-

ADIABATIC INDEX

Gas

PHASE

-

ELECTRICAL TYPE

-

CONDUCTIVITY

-

RESISTIVITY

-

SUPERCONDUCTING POINT

-

MAGNETIC TYPE

-

MASS SUSCEPTIBILITY

-

MOLAR SUSCEPTIBILITY

-

VOLUME SUSCEPTIBILITY

Noble Gas

CLASSIFICATION

294.213'920'0

ATOMIC WEIGHT

-

ATOMIC RADIUS

157 pm

COVALENT RADIUS SINGLE BOND

-

COVALENT RADIUS DOUBLE BOND

-

COVALENT RADIUS TRIPLE BOND

-

VAN DER WAALS RADIUS

[Rn]7s²5f¹⁴6d¹⁰7p⁶

ELECTRON CONFIGURATION

Cubic, Face-centred

CRYSTAL STRUCTURE

-

DENSITY AS SOLID

4.900'00 g/cm³

DENSITY AS LIQUID

-

DENSITY AS GAS

-

SPACE GROUP NAME

-

SPACE GROUP NUMBER

-

LATTICE ANGLES

-

LATTICE CONSTANTS

-

VALENCE

-

ELECTRONEGATIVITY

-

ELECTRON AFFINITY

IONISATION ENERGY