Actinium
| Ac |
Actinium |
Transition Metal |
| Atomic number: |
89 |
|
Atomic weight: |
(277.0278) |
|
| Shells: |
2,8,18,32,18,9,2 |
|
Orbitals: |
[Rn] 6d1 7s2 |
|
| Melting point: |
1050°C |
|
Boiling point: |
3200°C (±300°C) |
|
| Covalent radius: |
-- |
Å |
Atomic volume: |
22.54 |
cm³/mol |
| Atomic radius: |
-- |
Å |
Ionic radius: |
-- |
Å |
| Electronegativity: |
1.1 |
|
Oxidation states: |
|
|
| 1st ionization pot.: |
5.17 |
V |
2nd ionization pot.: |
12.126 |
V |
| 3rd ionization pot.: |
-- |
V |
Specific heat: |
-- |
J/gK |
| Heat of fusion: |
-- |
kJ/mol |
Heat of vapor.: |
-- |
kJ/mol |
| Thermal conduct.: |
0.12 |
W/cmK |
Electrical conduct.: |
-- |
10^6/cm ohm |
| Density: |
10.07 |
g/cm³ |
Valence: |
-- |
|
