| Group | ||||
|---|---|---|---|---|
| 2 | 13 | 14 | ||
| 2 |
5
B
Boron
[He] 2s2 2p1
|
|||
| Period | 3 |
12
Mg
Magnesium
[Ne] 3s2
|
13
Al
Aluminum
[Ne] 3s2 3p1
Name origin:
the Latin name for alum, 'alumen' meaning bitter salt
Atomic weight (amu):
26.9815386
Specific heat capacity (J/gK):
0.897
Density (g/cm3):
2.698
Melting point (K):
933.47
Boiling point (K):
2792.0
Electronegativity (Pauling):
1.61
Abundance (mg/kg):
82300.0
|
14
Si
Silicon
[Ne] 3s2 3p2
|
| 4 |
31
Ga
Gallium
[Ar] 4s2 3d10 4p1
|
|||
Tip: Hover over an adjacent element to compare its electron configuration to that of the central element.