Bohrium is an artificial element named after the Danish Nobel laureate Niels Bohr. This was to honor his model of the electron shell structure of atoms. Bohrium was first produced by colliding chromium atoms with bismuth atoms in a particle accelerator. Atoms of this metal are unstable. Thus, half of any sample of bohrium atoms decays in 61 seconds.
Summary of properties (Bh)
| Atomic weight | [270] |
| Discoverer (year) | Oganessian (1981) |
| Natural form | metallic solid (-) |
| Electron configuration | [Rn] 7s2 5f 14 6d5 |
| Melting point (ºC) | |
| Boiling point (ºC) | |
| Abundance in earth's crust (ppm) | synthetic |
| Isotope (abundance) | |
| Density g/cm3 | |
| Van der Waals radius (pm) | |
| Covalent radius (pm) | 141 |
| Electronegativity (Pauling) | |
| Vaporization enthalpy (kJ/mol) | - |
| Enthalpy of fusion (kJ/mol) | - |
| Specific heat capacity (J/g·K) at 25ºC and 1 atm | - |
| Thermal conductivity (W/cm·K) at 25ºC and 1 atm | - |
| Oxidation state | |
| Electron affinity (eV) | |
| 1st Ionization potential (eV) |
