Oganesson

Oganesson (Og)

Atomic Number118
Atomic Weight294
Mass Number293
Group18
Period7
Blockp
Protons118 p+
Neutrons175 n0
Electrons118 e-
Electron shell 118 Oganesson.svg Radial density-energy level graphic for the valence orbital of oganesson.svg Animated Bohr Model Enhanced Bohr Model Bohr Model Orbital Diagram

Properties

Atomic Radius
Atomic Volume
Covalent Radius
157 pm
Metallic Radius
Ionic Radius
Crystal Radius
Van der Waals radius
Density
Boiling Point
Melting Point
Electrons per shell2, 8, 18, 32, 32, 18, 8
Electronegativity
Electrophilicity
Proton Affinity
Electron Affinity
Ionization Potential
Heat of Vaporization
Heat of Fusion
Heat of Formation
Molar Heat Capacity
Specific Heat Capacity
Thermal Conductivity
Gas Basicity
Dipole Polarizability
58 a₀
C6 Dispersion Coefficient
Oxidation States-1, 0, 2, 4, 6
Color
Colorless
Crystal Structure ()
Lattice Constant
Bulk Modulus
Electrical Resistivity
Electron Configuration[Rn] 5f14 6d10 7s2 7p6
Magnetic Ordering
Magnetic Susceptibility
PhaseSolid
Poisson Ratio
Shear Modulus
Young's Modulus
Allotropes
Alternate Names
Adiabatic Index
Appearance
Electric Conductivity
Critical Pressure
Critical Temperature
Curie Point
Electrical
Hardness
Magnetic Susceptibility
Magnetic
Neel Point
Neutron Cross Section
Neutron Mass Absorption
Gas Phase
Quantum Numbers
Refractive Index
Space Group
Speed of Sound
Superconducting Point
Thermal Expansion
Valence Electrons
Classification
CategoryNoble gases, Noble gases
CAS GroupVIII
IUPAC GroupVIIIA
Glawe Number
Mendeleev Number118
Pettifor Number
Geochemical Class
Goldschmidt Classsynthetic
Radioactivity
RadioactiveYes ☢️
Decay Mode
Half-Life
Lifetime
Abundance
Abundance in Earth's crust
Abundance in Oceans
Abundance in Human Body
Abundance in Meteor
Abundance in Sun
Abundance in Universena

Isotopes of Oganesson

Stable Isotopes
Unstable Isotopes
293Og 294Og

History

Oganesson was identified in 2002 by a team composed of Russian scientists at Joint Institute for Nuclear Research, Dubna and American scientists at the Lawrence Livermore National Laboratory. It was produced by the bombardment of californium with calcium. Ununoctium was the temporary IUPAC systematic element name. Named after the Russian nuclear physicist Yuri Oganessian

DiscoverersJoint Institute for Nuclear Research
Discovery LocationRussia
Discovery Year2002
Name OriginNamed in honor of the scientist Yuri Oganessian.
Oganesson is harmful due to its radioactivity
Oganesson is historically known as eka-radon

Uses

Oganesson is used for scientific research purposes only.

Sources

Made by bombarding californium-249 with calcium-48.