108Hs[269]
Hassium
Transition metalsHard, shiny metals that conduct heat and electricity well and often form coloured compounds.
[Rn] 5f¹⁴ 6d⁶ 7s²
- Atomic number
- 108
- Atomic mass
- [269]
- Protons
- 108
- Neutrons
- 161
- Electrons
- 108
- Shells
- 2, 8, 18, 32, 32, 14, 2
- State at 25 °C
- Unknown
- Position
- Group 8, period 7
Proton (+)Neutron (0)Electron (−)
Discovered byGSI Darmstadt, 1984Peter Armbruster: 6 elementsGottfried Münzenberg: 3 elements
Named after Hesse, the German state where GSI is based.
Did you know?
- It is predicted to be one of the densest elements.
- Its oxide behaves like osmium's.
Where it's found
- Made only in laboratories, a few atoms at a time
What it's used for
- Scientific research only
Try it
There's no safe home experiment for Hassium. Explore it with the animated atom above instead.