Seaborgium: the essentials
Seaborgium is a synthetic element that is not present in the environment at all. It has no uses.
- Name: seaborgium
- Symbol: Sg
- Atomic number: 106
- Relative atomic mass (Ar): [ 271 ]
- Standard state: presumably a solid at 298 K
- Colour: 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-block
- Electron shell structure: 2.8.18.32.32.12.2
- CAS Registry ID: 54038-81-2
Seaborgium: historical information
Transuranium elements such as seaborgium can be created artificially in particle accelerators. Isotopes of seaborgium have short half-lives of less than a second. The first report of element 106 came in 1974 from the Soviet Joint Institute for Nuclear Research and these were followed later by others from Berkeley in California, USA. Experiments at the same American institution confirmed the discovery in 1993. The Russian experiments involved the bombardment of lead isotopes with high energy 54Cr ions while the American results followed the collision of 18O ions with 249Cf ions.
Seaborgium around us Read more »
Seaborgium has no biological role.
Seaborgium is a synthetic element that is not present in the geosphere.
| Location | ppb by weight | ppb by atoms | Links |
|---|---|---|---|
| Universe | (no data) | (no data) | 
|
| Crustal rocks | (no data) | (no data) | 
|
| Human | (no data) ppb by weight | (no data) atoms relative to C = 1000000 | 
|
Physical properties Read more »
Density of solid: 23200 (predicted) kg m-3
Molar volume: |196| cm3
Thermal conductivity: |206| W m‑1 K‑1
Heat properties Read more »
Melting point: (no data) K
Boiling point: (no data) K
Enthalpy of fusion: |203| kJ mol-1
Crystal structure Read more »
The solid state structure of seaborgium is: .
Seaborgium: orbital properties Read more »
Seaborgium atoms have 106 electrons and the shell structure is 2.8.18.32.32.12.2. 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).
Pauling electronegativity: (no data) (Pauling units)
First ionisation energy: (no data) kJ mol‑1
Second ionisation energy: (no data) kJ mol‑1
Isolation
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
Seaborgium isotopes Read more »
| Isotope | Mass /Da |
Natural abund. (atom %) |
Nuclear spin (I) |
Nuclear magnetic moment (μ/μN) |
|---|---|---|---|---|
| nil |
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