Oganesson

Oganesson (Og)

Oganesson is the 118th element in the periodic table and has a symbol of Og and atomic number of 118. It has an atomic weight of (294) and a mass number of 293. Oganesson has one hundred eighteen protons and one hundred seventy-five neutrons in its nucleus, and one hundred eighteen electrons in seven shells. It is located in group eighteen, period seven and block p of the periodic table.
Atomic Number118
Atomic Weight294
Mass Number293
Group18
Period7
Blockp
Protons118 p+
Neutrons175 n0
Electrons118 e-
Animated Bohr Model of Og (Oganesson)

Properties

Physical Properties
Atomic Radius
Molar Volume
Covalent Radius
157 pm
Metallic Radius
Ionic Radius
Crystal Radius
Van der Waals Radius
Density
7 g/cm³
Energy
Proton Affinity
Electron Affinity
0.056 eV/particle
Ionization Energy
Heat of Vaporization
Heat of Fusion
Heat of Formation
Electrons
Electron Shells2, 8, 18, 32, 32, 18, 8
Bohr Model: Og (Oganesson)
Valence Electrons8
Lewis Structure: Og (Oganesson)
Electron Configuration[Rn] 5f14 6d10 7s2 7p6
Enhanced Bohr Model of Og (Oganesson)
Orbital Diagram of Og (Oganesson)
Oxidation States
Electronegativity
Electrophilicity
Phases
PhaseSolid
Gas Phase
Boiling Point
Melting Point
Critical Pressure
Critical Temperature
Triple Point
Visual

Oganesson is a Colorless.

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

The lattice angles of Oganesson is .

Crystal Structure ()
Lattice Constant
Lattice Angles
Mechanical Properties
Hardness
Bulk Modulus
Shear Modulus
Young Modulus
Poisson Ratio
Speed of Sound
Classification

The CAS Group of Oganesson is VIII. The IUPAC Group of Og is VIIIA. The Mendeleev Number of Element 118 is 118. The Goldschmidt Class of Oganesson (Og) is synthetic.

CategoryNoble gases, Noble gases
CAS GroupVIII
IUPAC GroupVIIIA
Glawe Number
Mendeleev Number118
Pettifor Number
Geochemical Class
Goldschmidt Classsynthetic
Other

The Dipole Polarizability of Oganesson is 58 plus or minus 6 a₀. The Allotropes of Og is . The Quantum Numbers of Element 118 is 1S0. The Space Group of Oganesson (Og) is ().

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%
Electron shell 118 Oganesson
Radial density-energy level graphic for the valence orbital of oganesson
Yuri Oganessian 2017 stamp of Armenia

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

Oganesson on ChemicalAid