| Group | ||||
|---|---|---|---|---|
| 1 | 2 | 13 | ||
| 2 |
4
Be
Beryllium
[He] 2s2
|
|||
| Period | 3 |
11
Na
Sodium
[Ne] 3s1
|
12
Mg
Magnesium
[Ne] 3s2
Name origin:
Magnesia, a district of Eastern Thessaly in Greece
Atomic weight (amu):
24.305
Specific heat capacity (J/gK):
1.023
Density (g/cm3):
1.738
Melting point (K):
923.0
Boiling point (K):
1363.0
Electronegativity (Pauling):
1.31
Abundance (mg/kg):
23300.0
|
13
Al
Aluminum
[Ne] 3s2 3p1
|
| 4 |
20
Ca
Calcium
[Ar] 4s2
|
|||
Tip: Hover over an adjacent element to compare its electron configuration to that of the central element.