107
Bh
Bohrium
Transition metal period 7 group 7 d-block discovered: 1976
As a chemical element
Properties of the atom — they do not depend on what substance it is part of.
- Atomic number
- 107
- Atomic mass
- 270.133 a.m.u.
- Electron configuration
- [Rn]7s2 5f14 6d5
- Oxidation states
- 7, 5, 4, 3
As a simple substance
Properties of the substance these atoms form under ordinary conditions.
- State at 25 °C
- Solid