| Group | ||||
|---|---|---|---|---|
| f11 | f12 | f13 | ||
| 6 |
68
Er
Erbium
[Xe] 6s2 4f12
|
|||
| Period | 7 |
99
Es
Einsteinium
[Rn] 7s2 5f11
|
100
Fm
Fermium
[Rn] 7s2 5f12
Name origin:
Enrico Fermi, physicist
Atomic weight (amu):
257.0
Specific heat capacity (J/gK):
Density (g/cm3):
Melting point (K):
1125.0
Boiling point (K):
Electronegativity (Pauling):
1.3
Abundance (mg/kg):
0.0
|
101
Md
Mendelevium
[Rn] 7s2 5f13
|
Tip: Hover over an adjacent element to compare its electron configuration to that of the central element.