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

How many protons does hassium have?

Hassium has 108 protons. Its atomic number is 108, which is also the number of electrons in a neutral atom of hassium.

What group and period is hassium in?

Hassium is in group 8 and period 7 of the periodic table, in the d-block.

What is the atomic mass of hassium?

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

Element 108

Hassium (Hs)

Transition metal · Period 7 · Group 8 · d-block

Hassium (Hs) is element 108 of the periodic table, a transition metal in period 7, group 8 (d-block) with an atomic mass of 269 and is a solid at standard conditions.

At a glance

Atomic number: 108
Symbol: Hs
Atomic mass: 269 u
Category: Transition metals
Period: 7
Group: 8
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 6d6 7s2
Shorthand configuration: [Rn] 5f14 6d6 7s2
Electrons per shell: 2, 8, 18, 32, 32, 14, 2
Oxidation states: +8

Physical properties

Hassium 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: 40.7 g/cm³ (predicted)
Phase: solid

Atomic properties

Covalent radius: 134 pm (predicted)
First ionization energy: 730 kJ/mol (predicted)

Notable isotopes

Notable isotopes of Hassium: mass number, atomic mass, natural abundance, and stability.
Isotope	Mass	Abundance	Stability
Hs-277	277.1519	-	Half-life 11 seconds

Common uses

Scientific research only

Discovery

Year: 1984
Discovered by: Peter Armbruster, Gottfried Münzenberg
Country: Germany

Frequently asked questions

Is hassium a metal?: Yes. Hassium is a metal, classified as a transition metal on the periodic table.
How many protons does hassium have?: Hassium has 108 protons. Its atomic number is 108, which is also the number of electrons in a neutral atom of hassium.
What group and period is hassium in?: Hassium is in group 8 and period 7 of the periodic table, in the d-block.
What is the atomic mass of hassium?: The atomic mass of hassium is 269 u (unified atomic mass units).

Keep exploring

Hassium'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.