Hassium - Hs
Chemical properties of hassium
| Atomic number | 108 |
|---|---|
| Representative mass number | 269 (Hs-269; radioactive) |
| Periodic-table group | Group 8 |
| Electron configuration | [Rn] 5f14 6d6 7s2 |
| Density | Unknown |
| Melting point | Unknown |
| Boiling point | Unknown |
| Representative isotope half-life | about 15 seconds for Hs-269; isotope half-lives are short and uncertain |
Hassium (Hs) is a synthetic, radioactive element with atomic number 108. The bracketed representative mass number is the mass number of a radioactive isotope, not a standard atomic weight. Its isotopes decay rapidly, and available measurements are limited to very small numbers of atoms; bulk physical properties such as density, melting point, and boiling point are unknown.
Research and occurrence
Hassium is a synthetic, radioactive element known from experiments that have produced only a small number of atoms. Its chemistry has been studied in specialised experiments, but no bulk sample is available for ordinary physical-property measurements. It has no commercial use or water-treatment application.
Health and environmental context
Hassium does not occur naturally in measurable quantities and is not an environmental contaminant encountered in ordinary water or process-water treatment. It is handled only in specialised, controlled research settings.
Back to the periodic table of elements.
Sources and further reading
Hassium page last reviewed: by Lenntech.