Discovery date : 1974
Discovered by: Albert Ghiorso and colleagues
Origin of the name: Seaborgium is named for Glenn T. Seaborg,
who was instrumental in producing several transuranium elements.
Allotropes :
~>SEABORGIUM is a synthetic chemical element with symbol Sg and atomic number 106. It is named after the American nuclear chemist Glenn T. Seaborg.
| FACT BOX | |||
| Group | 6 | Melting point | Unknown |
| Period | 7 | Boiling point | Unknown |
| Block | d | Density (g cm−3) | Unknown |
| Atomic number | 106 | Relative atomic mass | [269] |
| State at 20°C | Solid | Key isotopes | 271Sg |
| Electron configuration | [Rn] 5f146d47s2 | CAS number | 54038-81-2 |
| ChemSpider ID | - | ChemSpider is a free chemical structure database | |
In 1970, a team led by Albert Ghiorso at the Californian Lawrence Berkeley National Laboratory (LBNL) bombarded californium with oxygen and was successful in producing element 106, isotope 263. In 1974, a team led by Georgy Flerov and Yuri Oganessian at the Russian Joint Institute for Nuclear Research (JINR) bombarded lead with chromium and obtained isotopes 259 and 260.
In September 1974, a team led by Ghiorso at LBNL produced isotope 263, with a half-life of 0.8 seconds, by bombarding californium with oxygen. Several atoms of seaborgium have since been made by this method which produces one seaborgium atom per hour.