| Group | ||||
|---|---|---|---|---|
| 2 | f1 | f2 | ||
| Period | 6 |
56
Ba
Barium
[Xe] 6s2
|
57
La
Lanthanum
[Xe] 6s2 5d1
Name origin:
the Greek 'lanthanein', meaning to lie hidden
Atomic weight (amu):
138.90547
Specific heat capacity (J/gK):
0.195
Density (g/cm3):
6.145
Melting point (K):
1193.0
Boiling point (K):
3737.0
Electronegativity (Pauling):
1.1
Abundance (mg/kg):
39.0
|
58
Ce
Cerium
[Xe] 6s2 4f1 5d1
|
| 7 |
89
Ac
Actinium
[Rn] 7s2 6d1
|
|||
Tip: Hover over an adjacent element to compare its electron configuration to that of the central element.