| Group | |||
|---|---|---|---|
| 1 | 2 | ||
| 6 |
55
Cs
Cesium
[Xe] 6s1
|
||
| Period | 7 |
87
Fr
Francium
[Rn] 7s1
Name origin:
France, where it was first discovered
Atomic weight (amu):
223.0
Specific heat capacity (J/gK):
Density (g/cm3):
1.87
Melting point (K):
300.0
Boiling point (K):
950.0
Electronegativity (Pauling):
0.7
Abundance (mg/kg):
0.001
|
88
Ra
Radium
[Rn] 7s2
|
Tip: Hover over an adjacent element to compare its electron configuration to that of the central element.