| Group | ||||
|---|---|---|---|---|
| 1 | 2 | 3 | ||
| 3 |
12
Mg
Magnesium
[Ne] 3s2
|
|||
| Period | 4 |
19
K
Potassium
[Ar] 4s1
|
20
Ca
Calcium
[Ar] 4s2
Name origin:
the Latin 'calx' meaning lime
Atomic weight (amu):
40.078
Specific heat capacity (J/gK):
0.647
Density (g/cm3):
1.54
Melting point (K):
1115.0
Boiling point (K):
1757.0
Electronegativity (Pauling):
1.0
Abundance (mg/kg):
41500.0
|
21
Sc
Scandium
[Ar] 4s2 3d1
|
| 5 |
38
Sr
Strontium
[Kr] 5s2
|
|||
Tip: Hover over an adjacent element to compare its electron configuration to that of the central element.