Protactinium — Pa
The chemical element Protactinium is an element of type Metal actinides with the symbol Pa. It has an atomic mass of 231.03588 u and an electronic configuration of [Rn] 5f2 6d1 7s2.
Synthétique
Radioactif
Liquide
Gaz
4030°
4
5
8
18
32
20
9
2
- Atomic number
- 91
- Atomic mass
- 231.03588
- Symbol
- Pa
- Melting point
- 1554
- Boiling point
- 4030
- Density
- 15.37
- Period
- 7
- Group
- 0
- Discovery
- 1917 Hahn and Meitner
- Abundance
- 0.001
- Radius
- 0
- Electronegativity
- 1.5
- Ionization
- 5.89
- Isotope
- 14
- Electronic configuration
- [Rn] 5f2 6d1 7s2
- Oxidation state
- 3,4,5
- Electron
- 2,8,18,32,20,9,2