| Group | |||
|---|---|---|---|
| 1 | 2 | ||
| 5 |
37
Rb
Rubidium
[Kr] 5s1
|
||
| Period | 6 |
55
Cs
Cesium
[Xe] 6s1
Name origin:
the Latin 'caesius', meaning sky blue
Atomic weight (amu):
132.9054519
Specific heat capacity (J/gK):
0.242
Density (g/cm3):
1.873
Melting point (K):
301.59
Boiling point (K):
944.0
Electronegativity (Pauling):
0.79
Abundance (mg/kg):
3.0
|
56
Ba
Barium
[Xe] 6s2
|
| 7 |
87
Fr
Francium
[Rn] 7s1
|
||
Tip: Hover over an adjacent element to compare its electron configuration to that of the central element.