| Group | ||||
|---|---|---|---|---|
| 4 | 5 | 6 | ||
| 5 |
41
Nb
Niobium
[Kr] 5s2 4d3
|
|||
| Period | 6 |
72
Hf
Hafnium
[Xe] 6s2 4f14 5d2
|
73
Ta
Tantalum
[Xe] 6s2 4f14 5d3
Name origin:
King Tantalus, father of Niobe from Greek mythology
Atomic weight (amu):
180.94788
Specific heat capacity (J/gK):
0.14
Density (g/cm3):
16.654
Melting point (K):
3290.0
Boiling point (K):
5731.0
Electronegativity (Pauling):
1.5
Abundance (mg/kg):
2.0
|
74
W
Tungsten
[Xe] 6s2 4f14 5d4
|
| 7 |
105
Db
Dubnium
[Rn] 7s2 5f14 6d3
|
|||
Tip: Hover over an adjacent element to compare its electron configuration to that of the central element.