| Group | ||||
|---|---|---|---|---|
| f12 | f13 | f14 | ||
| Period | 6 |
68
Er
Erbium
[Xe] 6s2 4f12
|
69
Tm
Thulium
[Xe] 6s2 4f13
Name origin:
Thule, the ancient name for Scandinavia
Atomic weight (amu):
168.93421
Specific heat capacity (J/gK):
0.16
Density (g/cm3):
9.321
Melting point (K):
1818.0
Boiling point (K):
2223.0
Electronegativity (Pauling):
1.25
Abundance (mg/kg):
0.52
|
70
Yb
Ytterbium
[Xe] 6s2 4f14
|
| 7 |
101
Md
Mendelevium
[Rn] 7s2 5f13
|
|||
Tip: Hover over an adjacent element to compare its electron configuration to that of the central element.