Sg
Seaborgium
Element 106 · Transition metal
Seaborgium (Sg)
Seaborgium is a synthetic, radioactive transition metal and a heavier relative of tungsten.
- Transition metal
- Period 7
- Group 6
- d-block
- solid at room temperature
- ☢ Radioactive
Key properties
- Atomic mass
- [269]
- u
- Electron configuration
- [Rn] 5f14 6d4 7s2
- Melting point
- —
- Boiling point
- —
- Density
- 35 g/cm³
- Electronegativity
- —
- Atomic radius
- —
- 1st ionisation energy
- —
Superheavy elements have only been made a few atoms at a time. Most properties shown are theoretical predictions.
Compare with every element:Electronegativity chartAtomic radius chartIonisation energy chartDensity chart of the elementsMelting point chartElectron configuration chart
Did you know?
Notable facts about seaborgium
- 01
It was the first element named after a living person.
- 02
Seaborg said the honour was greater than his Nobel Prize.
- 03
Seaborgium hexacarbonyl was made in 2014, showing it forms compounds like tungsten.
Applications
What is seaborgium used for?
- Research
History
Discovery & name origin
Atomic structure
Atomic properties
Atomic structure
Atomic properties
- Atomic number
- 106
- Atomic mass
- [269] u
- Group
- 6
- Period
- 7
- Block
- d-block
- Electron configuration
- [Rn] 5f14 6d4 7s2
- Full configuration
- 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f14 6d4
- Electrons per shell
- 2, 8, 18, 32, 32, 12, 2
- Electronegativity (Pauling)
- —
- Electron affinity
- —
- Atomic radius (van der Waals)
- —
- Stable isotopes
- None — all isotopes are radioactive
Oxidation states
Highlighted: common oxidation states (+6, +5, +4, +3, 0).
Physical
Physical properties & colour
Physical
Physical properties & colour
- State at 20 °C
- Solid (predicted)
- Melting point
- —
- Boiling point
- —
- Density
- 35 g/cm³
- Molar heat capacity
- —
- Appearance
- —
- CPK model colour
- Copied
The CPK colour is the convention used for this element’s atoms in molecular models.
FAQ
Seaborgium questions
What is Sg on the periodic table?
Sg is the symbol for seaborgium, element 106 on the periodic table. It sits in group 6, period 7, in the transition metal category, and has an atomic mass of [269].
What is the atomic number of seaborgium?
Seaborgium has atomic number 106, so every seaborgium atom has 106 protons in its nucleus. Its symbol is Sg and its atomic mass is [269].
Who discovered seaborgium?
Seaborgium was discovered by Albert Ghiorso in 1974 (United States). The name comes from from Glenn T. Seaborg.
What is seaborgium used for?
Seaborgium is used for: research.
Is seaborgium a metal?
Yes. Seaborgium is a transition metal, one of the metallic elements.
What is the electron configuration of seaborgium?
The electron configuration of seaborgium is [Rn] 5f14 6d4 7s2 (predicted). Its 106 electrons are arranged in shells as 2, 8, 18, 32, 32, 12, 2.