dubnium — Db
The chemical element dubnium is an element of type Transition metal with the symbol Db. It has an atomic mass of 268 u and an electronic configuration of [Rn] 5f14 6d3 7s2.
Synthétique
Radioactif
Liquide
Gaz
8
18
32
32
11
2
- Atomic number
- 105
- Atomic mass
- 268
- Symbol
- Db
- Melting point
- 0
- Boiling point
- 0
- Density
- 29.3
- Period
- 7
- Group
- 5
- Discovery
- 1970 Ghiorso et al.
- Abundance
- 0
- Radius
- 0
- Electronegativity
- 0
- Ionization
- 0
- Isotope
- 0
- Electronic configuration
- [Rn] 5f14 6d3 7s2
- Oxidation state
- 0
- Electron
- 2,8,18,32,32,11,2