Potassium
| Atomic number: |
19 |
|
Atomic weight: |
39.0983 |
|
| Shells: |
2,8,8,1 |
|
Orbitals: |
[Ar] 4s1 |
|
| Melting point: |
63.25°C |
|
Boiling point: |
759.9°C |
|
| Covalent radius: |
2.03 |
Å |
Atomic volume: |
45.46 |
cm³/mol |
| Atomic radius: |
2.77 |
Å |
Ionic radius: |
1.51 (+1) |
Å |
| Electronegativity: |
0.82 |
|
Oxidation states: |
|
|
| 1st ionization pot.: |
4.3407 |
V |
2nd ionization pot.: |
31.625 |
V |
| 3rd ionization pot.: |
45.72 |
V |
Specific heat: |
0.75 |
J/gK |
| Heat of fusion: |
2.334 |
kJ/mol |
Heat of vapor.: |
79.870 |
kJ/mol |
| Thermal conduct.: |
1.024 |
W/cmK |
Electrical conduct.: |
0.139 |
10^6/cm ohm |
| Density: |
0.862 |
g/cm³ |
Valence: |
1 |
|
