Sr
Strontium
Element 38 · Alkaline earth metal · Period 5, Group 2
Solid · Discovered 1790
Atomic Properties
| Atomic Number | 38 |
| Atomic Mass | 87.62u |
| Electron Configuration | [Kr]5s2 |
| Electronegativity | 0.95Pauling |
| Atomic Radius | 249pm |
| Ionization Energy | 5.695eV |
| Oxidation States | +2 |
Physical Properties
| Standard State | Solid |
| Melting Point | 1050K |
| Boiling Point | 1655K |
| Density | 2.64g/cm³ |
| Group Block | Alkaline earth metal |
| Year Discovered | 1790 |