Hassium (Hs)
"The Hessian, a hero from the German state that pioneered heavy element discovery."
A memorable persona to anchor Hs in your mind.
40.7
Grams per cm³
N/A
Celsius (°C)
N/A
Radius (pm)
Daily Life Link
Hassium has no everyday connection, used only in research.
Discovery & History
Year Discovered
1984
Discovered By
GSI Helmholtz Centre for Heavy Ion Research
Origin of Name
"The name is derived from the German state of Hesse where Hassium was first made."
Technical Properties
Atomic Mass
[269] u
Standard State
solid
Boiling Point
N/A
Electron Configuration
[Rn] 5f146d67s2
1st Ionization Energy
N/A
Electron Affinity
N/A
Oxidation States
"Hassium is a synthetic, highly radioactive metal."
Did You Know?
It is named after the German state of Hesse (Hassia in Latin), where the GSI Helmholtz Centre for Heavy Ion Research that discovered it is located.
The experiment that first successfully created hassium involved firing iron-58 nuclei into a lead-208 target for a week to produce just three atoms.
It is the heaviest element whose chemical properties have been experimentally characterized.
As expected for a Group 8 element, experiments have shown that it forms a stable tetroxide, similar to osmium.