107 - Bohrium transition metal
Discovered by Gesellschaft für Schwerionenforschung in 1981
Bohrium is a chemical element with symbol Bh and atomic number 107. It is named after Danish physicist Niels Bohr. It is a synthetic element (an element that can be created in a laboratory but is not found in nature) and radioactive; the most stable known isotope, 270Bh, has a half-life of approximately 61 seconds.
Periodic table
| Shell | Electrons | Orbitals |
|---|---|---|
| 1 | 2 | 2 in 1s |
| 2 | 8 | 2 in 2s + 6 in 2p |
| 3 | 18 | 2 in 3s + 6 in 3p + 10 in 3d |
| 4 | 32 | 2 in 4s + 6 in 4p + 10 in 4d + 14 in 4f |
| 5 | 32 | 2 in 5s + 6 in 5p + 10 in 5d + 14 in 5f |
| 6 | 13 | 2 in 6s + 6 in 6p + 5 in 6d |
| 7 | 2 | 2 in 7s |
Electron shells
270 u Atomic Mass
7 Group
37.1 g/cm³ Density
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f14 6d5 Electron Configuration
*[Rn] 5f14 6d5 7s2 Electron Configuration (semantic)
107 Electrons
7 Number of Shells
157 Neutrons
107 Atomic Number
7 Period
Solid Phase
107 Protons