Bohrium
transition metal · period 7 · group 7 · d-block
Bohrium is a synthetic chemical element with the symbol Bh and atomic number 107. It is named after Danish physicist Niels Bohr.
What the numbers say
At standard temperature and pressure Bohrium is a solid, sitting in period 7, group 7 of the d-block.
First identified in 1981.
Check it against computed structures
The structure search queries the Materials Project, OQMD and the Open Materials Database for computed crystal structures containing Bh — with DFT formation energy, hull stability and band gap where the provider publishes them.
K 2 · L 8 · M 18 · N 32 · O 32 · P 13 · Q 2
Properties
| Atomic number | 107 |
|---|---|
| Atomic mass | 270 u |
| Series | transition metal |
| Group | 7 |
| Period | 7 |
| Block | d-block |
| Phase at STP | Solid |
| Electron configuration | *[Rn] 5f¹⁴ 6d⁵ 7s² |
| Oxidation states | 7 |
| Discovered | 1981 |
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See Bh in context with all 118 elements.
Working with bohrium in a real design?
Ask the materials chat how Bh behaves in your alloy system, what it does to weldability, and which grades to look at — with the source of every number named.