Atomic number 107
Bohrium
Transition metal
No photo: here’s why
Bohrium is a synthetic element made only in vanishingly small, intensely radioactive amounts - its atoms decay so quickly that no piece big enough to see or photograph has ever existed.
Quick facts
- Atomic mass
- 270.00
- Group
- 7
- Period
- 7
- State (STP)
- unknown
- Electronegativity
- –
- Common ox. states
- +7
Properties
[Rn] 5f¹⁴ 6d⁵ 7s²
- Ionization energy
- –
- Electron affinity
- –
- Melting point
- –
- Boiling point
- –
How dangerous is it?
A laboratory-only element that exists as a few fleeting atoms before they decay; nobody will ever come across it outside a research accelerator.
- RadioactiveImmediate
It is highly radioactive on paper, though its atoms last only moments and never accumulate.
Created and watched solely inside specialized labs with remote, heavily shielded equipment.
How it bonds· family overview
Bohrium (Bh) is a synthetic super-heavy element produced one atom at a time. Its position predicts d-block transition-metal chemistry - multiple oxidation states, oxide and halide salts - but only a handful of atoms have ever existed, so the chemistry is largely inferred from group trends.
