| Group | ||||
|---|---|---|---|---|
| f1 | f2 | f3 | ||
| 6 |
58
Ce
Cerium
[Xe] 6s2 4f1 5d1
|
|||
| Period | 7 |
89
Ac
Actinium
[Rn] 7s2 6d1
|
90
Th
Thorium
[Rn] 7s2 6d2
Name origin:
Thor, the Scandinavian god of thunder
Atomic weight (amu):
232.03806
Specific heat capacity (J/gK):
0.113
Density (g/cm3):
11.72
Melting point (K):
2115.0
Boiling point (K):
5061.0
Electronegativity (Pauling):
1.3
Abundance (mg/kg):
9.6
|
91
Pa
Protactinium
[Rn] 7s2 5f2 6d1
|
Tip: Hover over an adjacent element to compare its electron configuration to that of the central element.