| Group | ||||
|---|---|---|---|---|
| f4 | f5 | f6 | ||
| 6 |
61
Pm
Promethium
[Xe] 6s2 4f5
|
|||
| Period | 7 |
92
U
Uranium
[Rn] 7s2 5f3 6d1
|
93
Np
Neptunium
[Rn] 7s2 5f4 6d1
Name origin:
Neptune, the eighth planet in the Solar System
Atomic weight (amu):
237.0
Specific heat capacity (J/gK):
Density (g/cm3):
20.45
Melting point (K):
917.0
Boiling point (K):
4273.0
Electronegativity (Pauling):
1.36
Abundance (mg/kg):
0.001
|
94
Pu
Plutonium
[Rn] 7s2 5f6
|
Tip: Hover over an adjacent element to compare its electron configuration to that of the central element.