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 Yuri Oganessian 2017 stamp of Armenia.jpg Animated Bohr Model of Og (Oganesson) Enhanced Bohr Model of Og (Oganesson) Bohr Model: Og (Oganesson) Orbital Diagram of Og (Oganesson)

Properties

Atomic Radius
Molar Volume
Covalent Radius
157 pm
Metallic Radius
Ionic Radius
Crystal Radius
Van der Waals Radius
Density
Energy
Proton Affinity
Electron Affinity
Ionization Energy
Heat of Vaporization
Heat of Fusion
Heat of Formation
Electrons
Electron Shells2, 8, 18, 32, 32, 18, 8
Valence Electrons0
Electron Configuration[Rn] 5f14 6d10 7s2 7p6
Oxidation States
Electronegativity
Electrophilicity
Phases
PhaseSolid
Gas Phase
Boiling Point
Melting Point
Critical Pressure
Critical Temperature
Triple Point
Visual
Color
Colorless
Appearance
Refractive Index
Thermodynamic Properties
Thermal Conductivity
Thermal Expansion
Molar Heat Capacity
Specific Heat Capacity
Heat Capacity Ratio (Adiabatic Index)
Electrical Properties
Type
Electrical Conductivity
Electrical Resistivity
Superconducting Point
Magnetism
Type
Magnetic Susceptibility (Mass)
Magnetic Susceptibility (Molar)
Magnetic Susceptibility (Volume)
Magnetic Ordering
Curie Point
Neel Point
Structure
Crystal Structure ()
Lattice Constant
Lattice Angles
Mechanical Properties
Hardness
Bulk Modulus
Shear Modulus
Young Modulus
Poisson Ratio
Speed of Sound
Classification
CategoryNoble gases, Noble gases
CAS GroupVIII
IUPAC GroupVIIIA
Glawe Number
Mendeleev Number118
Pettifor Number
Geochemical Class
Goldschmidt Classsynthetic
Other
Gas Basicity
Dipole Polarizability
58 ± 6 a₀
C6 Dispersion Coefficient
Allotropes
Neutron Cross Section
Neutron Mass Absorption
Quantum Numbers1S0
Space Group ()

Isotopes of Oganesson

Stable Isotopes0
Unstable Isotopes3
Radioactive Isotopes3

293Og

AbundanceRadioactive ☢️
Relative Atomic Mass
293.213423 ± 0.000761 Da
Mass Number293
G-Factor
Half Life
Spin
Quadrupole Moment
Discovery Year2010
Parity

293Og Decay Modes
Decay ModeIntensity
α (α emission)%

294Og

AbundanceRadioactive ☢️
Relative Atomic Mass
294.213979 ± 0.000594 Da
Mass Number294
G-Factor
0
Half Life
0.7 ± 0.3 ms
Spin0
Quadrupole Moment
0
Discovery Year2004
Parity+

294Og Decay Modes
Decay ModeIntensity
α (α emission)100%
SF (spontaneous fission)%

295Og

AbundanceRadioactive ☢️
Relative Atomic Mass
295.216178 ± 0.000703 Da
Mass Number295
G-Factor
Half Life
680 ± 540 ms
Spin
Quadrupole Moment
Discovery Year2006
Parity

295Og Decay Modes
Decay ModeIntensity
α (α emission)100%

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
Etymology (Name Origin)Named in honor of the scientist Yuri Oganessian.
Pronunciation
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.

Abundance
Abundance in Earth's crust
Abundance in Oceans
Abundance in Human Body
0 %
Abundance in Meteor
0 %
Abundance in Sun
0 %
Abundance in Universe
0 %

Nuclear Screening Constants