Seaborgium

Seaborgium (Sg)

Half-life of 0.9 +/- 0.2 s. Discovered by the Joint Institute for Nuclear Research at Dubna (U.S.S.R.) in June of 1974. Its existence was confirmed by the Lawrence Berkeley Laboratory and Livermore National Laboratory in September of 1974.
Atomic Number106
Atomic Weight271
Mass Number258
Group6
Period7
Blockd
Protons106 p+
Neutrons152 n0
Electrons106 e-
Electron shell 106 Seaborgium.svg Animated Bohr Model Enhanced Bohr Model Bohr Model Orbital Diagram

Properties

Atomic Radius
Atomic Volume
Covalent Radius
143 pm
Metallic Radius
Ionic Radius
Crystal Radius
Van der Waals radius
Density
Boiling Point
Melting Point
Electrons per shell2, 8, 18, 32, 32, 12, 2
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
40 a₀
C6 Dispersion Coefficient
Oxidation States6
Color
Colorless
Crystal Structure ()
Lattice Constant
Bulk Modulus
Electrical Resistivity
Electron Configuration[Rn] 5f14 6d4 7s2
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
CategoryTransition metals, Transition metals
CAS GroupVIA
IUPAC GroupVIB
Glawe Number
Mendeleev Number54
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 Seaborgium

Stable Isotopes
Unstable Isotopes
258Sg 259Sg 260Sg 261Sg 262Sg 263Sg 264Sg 265Sg 266Sg 267Sg 268Sg 269Sg 270Sg 271Sg 272Sg 273Sg

History

Scientists working at the Joint Institute for Nuclear Research in Dubna, USSR reported their discovery of element 106 in June 1974. Synthesis was also reported in September 1974 at the Lawrence Berkeley Laboratory by the workers of the Lawrence Berkeley and Livermore Laboratories led by Albert Ghiorso and E. Kenneth Hulet. It was produced by collisions of californium-249 with oxygen atoms. Named after Glenn Seaborg, American nuclear chemist and Nobel prize winner

DiscoverersSoviet Nuclear Research/ U. of Cal at Berkeley
Discovery LocationUSSR/United States
Discovery Year1974
Name OriginNamed in honor of Glenn Seaborg, American physical chemist known for research on transuranium elements.
Seaborgium is harmful due to its radioactivity
There are 12 known isotopes of seaborgium

Uses

Seaborgium is used for scientific research purposes only. It has no significant commercial applications.

Sources

Made by bombarding californium-249 with oxygen-18.