Bohrium - Bh
Chemical properties of bohrium
| Atomic number | 107 |
|---|---|
| Representative mass number | 270 (Bh-270; radioactive) |
| Periodic-table group | Group 7 |
| Electron configuration | [Rn] 5f14 6d5 7s2 |
| Density | Unknown |
| Melting point | Unknown |
| Boiling point | Unknown |
| Representative isotope half-life | about 3.8 minutes for Bh-270; estimates are highly uncertain |
Bohrium (Bh) is a synthetic, radioactive element with atomic number 107. 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
Bohrium is a synthetic, radioactive element. Only a few atoms have been made, so its bulk appearance and physical properties have not been measured. Research investigates its chemistry and its position in Group 7; it has no commercial use or relevance to routine water treatment.
Health and environmental context
Bohrium 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
Bohrium page last reviewed: by Lenntech.