Hassium: the essentials
Hassium, is a synthetic element that is not present in the environment at all.
The interested reader should consult the on-line version of Creating Super Heavy Elements for a fascinating insight into research on "super-heavy" atoms.
- Name: hassium
- Symbol: Hs
- Atomic number: 108
- Relative atomic mass (Ar): [ 277 ] (status unclear)
- Standard state: presumably a solid at 298 K
- Colour: unknown, but probably metallic and silvery white or grey in appearance
- Classification: Metallic
- Group in periodic table: 8
- Group name: (none)
- Period in periodic table: 7
- Block in periodic table: d-block
- Electron shell structure: 2.8.18.32.32.14.2
- CAS Registry ID: 54037-57-9
Hassium: historical information
Hassium around us Read more »
Hassium has no biological role.
Hassium is a synthetic element that is not present in the geosphere.
| Location | ppb by weight | ppb by atoms | Links |
|---|---|---|---|
| Universe | (no data) | (no data) | 
|
| Crustal rocks | (no data) | (no data) | 
|
| Human | (no data) ppb by weight | (no data) atoms relative to C = 1000000 | 
|
Physical properties Read more »
Density of solid: 28600 (predicted) kg m-3
Molar volume: 10 (rough estimate based upon density estimate) cm3
Thermal conductivity: (no data) W m‑1 K‑1
Heat properties Read more »
Melting point: (no data) K
Boiling point: (no data) K
Enthalpy of fusion: (no data) kJ mol-1
Crystal structure Read more »
The solid state structure of hassium is: .
Hassium: orbital properties Read more »
Hassium atoms have 108 electrons and the shell structure is 2.8.18.32.32.14.2. The ground state electronic configuration of neutral Hassium is [Rn].5f14.6d6.7s2 (a guess based upon that of osmium) and the term symbol of Hassium is 5D4 (a guess based upon guessed electronic structure).
Pauling electronegativity: (no data) (Pauling units)
First ionisation energy: (no data) kJ mol‑1
Second ionisation energy: (no data) kJ mol‑1
Isolation
Isolation: only a few atoms of element 108, hassium, have ever been made. The first atoms were made through a nuclear reaction involving fusion of an isotope of lead, 208Pb, with one of iron, 58Fe.
208Bi + 58Fe → 265Hs + 1n
Isolation of an observable quantity of hassium has never been achieved, and may well never be. This is because hassium decays very rapidly through the emission of α-particles.
Press release: http://www.gsi.de/portrait/Pressemeldungen/17052001_e.html
Hassium isotopes Read more »
| Isotope | Mass /Da |
Natural abund. (atom %) |
Nuclear spin (I) |
Nuclear magnetic moment (μ/μN) |
|---|---|---|---|---|
| nil |
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