Atomic number 105
Dubnium
Transition metal
Quick facts
- Atomic mass
- 268.00
- Group
- 5
- Period
- 7
- State (STP)
- unknown
- Electronegativity
- —
- Common ox. states
- +5
Properties
Electron configuration
[Rn] 5f¹⁴ 6d³ 7s²
- Ionization energy
- —
- Electron affinity
- —
- Melting point
- —
- Boiling point
- —
How it bonds· family overview
Dubnium (Db) 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.