Calcium
| Ca |
Calcium |
Alkali Earth Metal |
| Atomic number: |
20 |
|
Atomic weight: |
40.078 |
|
| Shells: |
2,8,8,2 |
|
Orbitals: |
[Ar] 4s2 |
|
| Melting point: |
839°C |
|
Boiling point: |
1484°C |
|
| Covalent radius: |
1.74 |
Å |
Atomic volume: |
25.9 |
cm³/mol |
| Atomic radius: |
2.23 |
Å |
Ionic radius: |
1.00 (+2) |
Å |
| Electronegativity: |
1.00 |
|
Oxidation states: |
|
|
| 1st ionization pot.: |
6.1132 |
V |
2nd ionization pot.: |
11.871 |
V |
| 3rd ionization pot.: |
50.908 |
V |
Specific heat: |
0.63 |
J/gK |
| Heat of fusion: |
8.540 |
kJ/mol |
Heat of vapor.: |
153.60 |
kJ/mol |
| Thermal conduct.: |
2.00 |
W/cmK |
Electrical conduct.: |
0.298 |
10^6/cm ohm |
| Density: |
1.55 |
g/cm³ |
Valence: |
2 |
|
