Seaborgium: the essentials
- Name: seaborgium
- Symbol: Sg
- Atomic number: 106
- Relative atomic mass (Ar): [ 269 ] (longest lived isotope)
- Standard state: presumably a solid at 298 K
- Appearance: unknown, but probably metallic and silvery white or grey in appearance
- Classification: Metallic
- Group in periodic table: 6
- Group name: (none)
- Period in periodic table: 7
- Block in periodic table: d
- Shell structure: 188.8.131.52.32.12.2
- CAS Registry: 54038-81-2
Seaborgium atoms have 106 electrons and the shell structure is 184.108.40.206.32.12.2. The ground state electronic configuration of neutral seaborgium is [Rn].5f14.6d4.7s2 (a guess based upon that of tungsten) and the term symbol of seaborgium is 5D0 (a guess based upon guessed electronic structure).
Seaborgium is a synthetic element that is not present in the environment at all. It has no uses.
Seaborgium: physical properties
- Density of solid: 23200 (predicted) kg m-3
- Molar volume: 12 (rough estimate based upon density estimate) cm3
- Thermal conductivity: 19 (estimate) W m‑1 K‑1
Seaborgium: heat properties
- Melting point: (no data) K
- Boiling point: (no data) K
- Enthalpy of fusion: 20.5 kJ mol-1
Seaborgium: atom sizes
- Atomic radius (empirical): (no data) pm
- Molecular single bond covalent radius: 143 (coordination number 6) ppm
- van der Waals radius: (no data) ppm
- Pauling electronegativity: (no data) (Pauling units)
- Allred Rochow electronegativity: (no data) (Pauling units)
- Mulliken-Jaffe electronegativity: (no data)
Seaborgium: orbital properties
- First ionisation energy: 753 (inferred) kJ mol‑1
- Second ionisation energy: 1650 kJ mol‑1
- Third ionisation energy: 2490 kJ mol‑1
- Universe: (no data) ppb by weight
- Crustal rocks: (no data) ppb by weight
- Human: (no data) ppb by weight
Seaborgium: crystal structure
Seaborgium: biological data
- Human abundance by weight: (no data) ppb by weight
Seaborgium has no biological role.
Reactions of seaborgium as the element with air, water, halogens, acids, and bases where known.
Seaborgium: binary compounds
Binary compounds with halogens (known as halides), oxygen (known as oxides), hydrogen (known as hydrides), and other compounds of seaborgium where known.
Seaborgium: compound properties
Bond strengths; lattice energies of seaborgium halides, hydrides, oxides (where known); and reduction potentials where known.
Seaborgium: historySeaborgium was discovered by Albert Ghiorso and others in 1974 at The Lawrence Berkeley Laboratory in California and the Livermore National Laboratory, USA.. Origin of name: glenn T. "Seaborg", American nuclear chemist and Nobel prize winner..
Isolation: only very small amounts of of element 106, seaborgium, have ever been made. The first samples were made through a nuclear reaction involving fusion of an isotope of californium, 249Cf, with one of oxygen, 18O.
18O + 249Cf → 263106Sg + 4 1n
Isolation of an observable quantity of seaborgium has never been achieved.
More recently, other isotopes have been made at the Paul Scherrer Institute (PSI) in Switzerland using neon atoms to bombard californium isotopes.
248Cf + 22Ne → 266Sg + 41n