| Group | ||||
|---|---|---|---|---|
| f3 | f4 | f5 | ||
| 6 |
60
Nd
Neodymium
[Xe] 6s2 4f4
|
|||
| Period | 7 |
91
Pa
Protactinium
[Rn] 7s2 5f2 6d1
|
92
U
Uranium
[Rn] 7s2 5f3 6d1
Name origin:
Uranus, the seventh planet in the Solar System
Atomic weight (amu):
238.02891
Specific heat capacity (J/gK):
0.116
Density (g/cm3):
18.95
Melting point (K):
1405.3
Boiling point (K):
4404.0
Electronegativity (Pauling):
1.38
Abundance (mg/kg):
2.7
|
93
Np
Neptunium
[Rn] 7s2 5f4 6d1
|
Tip: Hover over an adjacent element to compare its electron configuration to that of the central element.