einsteinium — Es
The chemical element einsteinium is an element of type Metal actinides with the symbol Es. It has an atomic mass of 252 u and an electronic configuration of [Rn] 5f11 7s2.
Synthétique
Radioactif
Liquide
Gaz
3
8
18
32
29
8
2
- Atomic number
- 99
- Atomic mass
- 252
- Symbol
- Es
- Melting point
- 860
- Boiling point
- 0
- Density
- 8.84
- Period
- 7
- Group
- 0
- Discovery
- 1952 Ghiorso et al.
- Abundance
- 0
- Radius
- 0
- Electronegativity
- 1.3
- Ionization
- 6.42
- Isotope
- 123
- Electronic configuration
- [Rn] 5f11 7s2
- Oxidation state
- 2,3
- Electron
- 2,8,18,32,29,8,2