| Group | ||||
|---|---|---|---|---|
| 1 | 2 | f1 | ||
| 6 |
56
Ba
Barium
[Xe] 6s2
|
|||
| Period | 7 |
87
Fr
Francium
[Rn] 7s1
|
88
Ra
Radium
[Rn] 7s2
Name origin:
the Latin 'radius', meaning ray
Atomic weight (amu):
226.0
Specific heat capacity (J/gK):
0.094
Density (g/cm3):
5.5
Melting point (K):
973.0
Boiling point (K):
2010.0
Electronegativity (Pauling):
0.9
Abundance (mg/kg):
0.001
|
89
Ac
Actinium
[Rn] 7s2 6d1
|
Tip: Hover over an adjacent element to compare its electron configuration to that of the central element.