| Group | ||||
|---|---|---|---|---|
| 1 | 2 | 3 | ||
| 4 |
20
Ca
Calcium
[Ar] 4s2
|
|||
| Period | 5 |
37
Rb
Rubidium
[Kr] 5s1
|
38
Sr
Strontium
[Kr] 5s2
Name origin:
Strontian, a small town in Scotland
Atomic weight (amu):
87.62
Specific heat capacity (J/gK):
0.301
Density (g/cm3):
2.64
Melting point (K):
1050.0
Boiling point (K):
1655.0
Electronegativity (Pauling):
0.95
Abundance (mg/kg):
370.0
|
39
Y
Yttrium
[Kr] 5s2 4d1
|
| 6 |
56
Ba
Barium
[Xe] 6s2
|
|||
Tip: Hover over an adjacent element to compare its electron configuration to that of the central element.