Is seaborgium a metal?

Yes. Seaborgium is a metal, classified as a transition metal on the periodic table.

How many protons does seaborgium have?

Seaborgium has 106 protons. Its atomic number is 106, which is also the number of electrons in a neutral atom of seaborgium.

What group and period is seaborgium in?

Seaborgium is in group 6 and period 7 of the periodic table, in the d-block.

What is the atomic mass of seaborgium?

The atomic mass of seaborgium is 269 u (unified atomic mass units).

Element 106

Seaborgium (Sg)

Transition metal · Period 7 · Group 6 · d-block

Seaborgium (Sg) is element 106 of the periodic table, a transition metal in period 7, group 6 (d-block) with an atomic mass of 269 and is a solid at standard conditions.

At a glance

Atomic number: 106
Symbol: Sg
Atomic mass: 269 u
Category: Transition metals
Period: 7
Group: 6
Block: d-block
Phase at STP: solid

Electron structure

Electron configuration: 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d10 6s2 6p6 5f14 6d4 7s2
Shorthand configuration: [Rn] 5f14 6d4 7s2
Electrons per shell: 2, 8, 18, 32, 32, 12, 2
Oxidation states: +6

Physical properties

Seaborgium has only ever been produced in quantities too small to weigh or observe in bulk. The physical and atomic values below are theoretical predictions from periodic trends and relativistic calculations, not measurements.

Density: 35 g/cm³ (predicted)
Phase: solid

Atomic properties

Covalent radius: 143 pm (predicted)
First ionization energy: 757 kJ/mol (predicted)

Notable isotopes

Notable isotopes of Seaborgium: mass number, atomic mass, natural abundance, and stability.
Isotope	Mass	Abundance	Stability
Sg-269	269.12863	-	Half-life 14 minutes

Common uses

Scientific research only

Discovery

Year: 1974
Discovered by: Albert Ghiorso, Joint Institute for Nuclear Research
Country: USA/Russia

Frequently asked questions

Is seaborgium a metal?: Yes. Seaborgium is a metal, classified as a transition metal on the periodic table.
How many protons does seaborgium have?: Seaborgium has 106 protons. Its atomic number is 106, which is also the number of electrons in a neutral atom of seaborgium.
What group and period is seaborgium in?: Seaborgium is in group 6 and period 7 of the periodic table, in the d-block.
What is the atomic mass of seaborgium?: The atomic mass of seaborgium is 269 u (unified atomic mass units).

Keep exploring

Seaborgium's row is on the printable element property sheet, and its tile is on the periodic table wall chart - the same numbers as above, laid out for A4 or A3 paper.