| Property | Value | Property | Value |
|---|---|---|---|
| Appearance | Appearance unknown; only a few atoms have ever been produced | ||
| Classification | Transition Metals | Density | 26–27 g/cm³, predicted |
| Boiling Point | -- | Melting Point | -- |
| Property | Value | Property | Value |
|---|---|---|---|
| Atomic Number | 107 | Atomic Mass | 270 |
| Van Der Waals Radius | -- | Atomic Radius (empirical) | 128, predicted |
| Property | Value | Property | Value |
|---|---|---|---|
| Electronegativity | -- | Electron Affinity | -- |
| Electron Configuration | 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f14 6d5 | ||
| Oxidation States | (3), (4), (5), 7 — (predicted) | ||
| Ionization Energies | Showing 5 of 7 ionization energies.
| ||
Bohrium was first observed by a team of scientists in Dubna, Russia, in 1975. Yuri Oganessian and his team published their results on creating an isotope of element 107 with a mass of 261, but they don't get credit for bohrium's discovery.
In 1981, a team from the German nuclear research institute, the Geselleschaft für Schwerionenforschung (GSI), confirmed the existence of bohrium with more evidence and received credit for the discovery.
Very few properties of bohrium have been measured because it decays so quickly and is expensive to make. A few chemistry-related properties have been measured here and there, but properties and compounds of bohrium are largely unknown and scientists have only theorized what those might be like.
Bohrium's most stable isotope is bohrium-270 and only has a half-life of about 1 minute! It decays into dubnium-266 (named after Dubna, Russia, where bohrium was first synthesized).
Bohrium isn’t really used beyond scientific research of bohrium itself. It is only used to study its own physical properties and to synthesize isotopes of other elements. In a way, it’s a helper element by allowing scientists to understand other elements!
All known isotopes of bohrium are very radioactive. The most stable isotope has a half-life of only 2.4 minutes!
There is an unconfirmed isotope, bohrium-278, that may have a longer half-life of about 11.5 minutes.
Only a few atoms of bohrium have ever been produced. Bohrium is a synthetic element, meaning it is not found in nature. It is artificially created in particle accelerators by bombarding bismuth with chromium.