Transition metals
Seaborgium
A superheavy element named after Glenn Seaborg.
Atomic #106Mass[269]Blockd-blockPeriod7Group6
Sg106 · [269]
3D Atom Explorer
Inside the Seaborgium atom
Switch between Bohr and Quantum Cloud modes to compare a simple teaching model with a more realistic probability-based view, and follow the guided tour to explore the Seaborgium atom step by step.
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Electron configuration
[Rn] 5f14 6d4 7s2
A neutral Seaborgium atom has 106 electrons (equal to its proton count). Choosing a different isotope above changes only the neutron count.
Shell distribution
Shell 12 e⁻Shell 28 e⁻Shell 318 e⁻Shell 432 e⁻Shell 532 e⁻Shell 612 e⁻Shell 72 e⁻
Electrons fill inner shells before outer ones; the outermost (valence) shell drives the element's chemistry.
Properties
Physical & atomic properties
- State (room temp)
- Unknown
- Melting point
- —
- Boiling point
- —
- Density
- —
- Electronegativity
- —
- Atomic radius
- —
- 1st ionization energy
- 757 kJ/mol
- Category
- Transition metals
History
Discovery & naming
- Discovered
- 1974
- Discovered by
- Lawrence Berkeley Laboratory team
- Origin of name
- Chemist Glenn Seaborg.
Notable uses
Scientific research only.
Cosmic origin
Where Seaborgium comes from
Human synthesis
Synthetic and fleeting, yet stable enough for its chemistry to be probed atom by atom.
Simplified origin map — many elements form through more than one astrophysical pathway.
Summary
- Atomic number
- 106
- Atomic mass
- [269]
- Category
- Transition metals
- Group · Period
- 6 · 7
- Block
- d-block
- Shells
- 2 · 8 · 18 · 32 · 32 · 12 · 2