106
Sg
269
Seaborgium
Transition Metal
Group 6
Period 7
Block d
Seaborgium is a chemical element of the periodic table with chemical symbol Sg and atomic number 106 with an atomic weight of 269 u and is classed as transition metal and is part of group 6 (chromium group). Seaborgium is solid at room temperature.
Seaborgium in the periodic table
| Symbol | Sg |
| Atomic number | 106 |
| Group | 6 (Chromium group) |
| Period | 7 |
| Block | d |
| Classification | Transition Metal |
| Appearance | - |
| Color | - |
| Number of protons | 106 p+ |
| Number of neutrons | 163 n0 |
| Number of electrons | 106 e- |
From Wikipedia, the free encyclopediaSeaborgium is a synthetic element with symbol Sg and atomic number 106. Its most stable isotope 271Sg has a half-life of 1.9 minutes. A more recently discovered isotope 269Sg has a potentially slightly longer half-life (ca.
Physical properties
| Phase at STP | Solid |
| Density | 35 g/cm3 |
| Atomic weight | 269 u |
Thermal properties
Atomic properties
| Electronegativity (Pauling Scale) | - |
| Electron affinity | - |
| Oxidation states | 0, (+3), (+4), (+5), +6 (parenthesized: prediction) |
| Ionization energies |
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Electron configuration for seaborgium
Electron configuration Shorthand configuration | [Rn] 5f14 6d4 7s2 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Full configuration | 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d10 5f14 6s2 6p6 6d4 7s2 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Electron configuration chart |
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| Electrons per shell | 2, 8, 18, 32, 32, 12, 2 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Outer shell electrons | 2 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Valence electrons (incl. d) | 6 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Valency electrons | 4,6 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Bohr model | Figure: Shell diagram of Seaborgium (Sg) atom. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Orbital Diagram
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The history of Seaborgium
| Discovery | Lawrence Berkeley National Laboratory (1974) |
| Named by | Lawrence Berkeley National Laboratory |
Discovery of seaborgium Seaborgium was first synthesized in 1974 by Albert Ghiorso and collaborators at Berkeley by bombarding californium-249 with oxygen-18 ions. IUPAC officially adopted the name in 1997, honouring Glenn T. Seaborg, then still alive, who had led the discovery of many transuranium elements. It was the first element officially named after a living person, which was initially controversial. | |
| Original word | Seaborg |
| Language of origin | English |
| Name source | Person |
| Meaning | “Glenn Seaborg” |
Naming The element is named in honour of Glenn T. Seaborg, the American chemist who led the discovery of many transuranium elements. It was the first element named after a living person. | |
Identifiers
List of unique identifiers for Seaborgium in various chemical registry databases| CAS Number | 54038-81-2 |
| ChemSpider ID | - |
| EC number | - |
| PubChem CID Number | 56951717 |