Lanthanum
| La |
Lanthanum |
Transition Metal |
| Atomic number: |
57 |
|
Atomic weight: |
138.9055 |
|
| Shells: |
2,8,18,18,9,2 |
|
Orbitals: |
[Xe] 5d1 6s2 |
|
| Melting point: |
918°C |
|
Boiling point: |
3464°C |
|
| Covalent radius: |
1.69 |
Å |
Atomic volume: |
20.73 |
cm³/mol |
| Atomic radius: |
2.74 |
Å |
Ionic radius: |
1.16 (+3) |
Å |
| Electronegativity: |
1.10 |
|
Oxidation states: |
|
|
| 1st ionization pot.: |
5.5770 |
V |
2nd ionization pot.: |
11.059 |
V |
| 3rd ionization pot.: |
19.174 |
V |
Specific heat: |
0.19 |
J/gK |
| Heat of fusion: |
6.20 |
kJ/mol |
Heat of vapor.: |
414.0 |
kJ/mol |
| Thermal conduct.: |
0.135 |
W/cmK |
Electrical conduct.: |
0.0126 |
10^6/cm ohm |
| Density: |
6.7 |
g/cm³ |
Valence: |
3 |
|
