fermium — Fm
The chemical element fermium is an element of type Metal actinides with the symbol Fm. It has an atomic mass of 257 u and an electronic configuration of [Rn] 5f12 7s2.
Synthétique
Radioactif
Liquide
Gaz
3
8
18
32
30
8
2
- Atomic number
- 100
- Atomic mass
- 257
- Symbol
- Fm
- Melting point
- 1527
- Boiling point
- 0
- Density
- 9.7
- Period
- 7
- Group
- 0
- Discovery
- 1953 Ghiorso et al.
- Abundance
- 0
- Radius
- 0
- Electronegativity
- 1.3
- Ionization
- 6.5
- Isotope
- 103
- Electronic configuration
- [Rn] 5f12 7s2
- Oxidation state
- 2,3
- Electron
- 2,8,18,32,30,8,2