Actinium — Ac
The chemical element Actinium is an element of type Metal actinides with the symbol Ac. It has an atomic mass of 89 u and an electronic configuration of [Rn] 6d1 7s2.
Synthétique
Radioactif
Liquide
Gaz
3197°
8
18
32
18
9
2
- Atomic number
- 89
- Atomic mass
- 89
- Symbol
- Ac
- Melting point
- 1047
- Boiling point
- 3197
- Density
- 10.07
- Period
- 7
- Group
- 3
- Discovery
- 1899 Debierne/Giesel
- Abundance
- 0.001
- Radius
- 0
- Electronegativity
- 1.1
- Ionization
- 5.17
- Isotope
- 11
- Electronic configuration
- [Rn] 6d1 7s2
- Oxidation state
- 3
- Electron
- 2,8,18,32,18,9,2