| General |
|---|
| Name | Strontium | | Symbol | Sr | | Number | 38 | | Chemical series | Alkaline earth metals | | Group / Period | 2 / 5 | | Block | s-block | | CAS registry number | 7440-24-6 |
| Physical properties |
|---|
| State | solid | | Density | 2.64 g/cm3 | | Melting point | 1050 K (777°C, 1431°F) | | Boiling point | 1655 K (1382°C, 2520°F) | | Critical point | |
| Atomic properties |
|---|
| Atomic Weight | 87.62 g/mol | | Crystal structure | cubic face centered | | Electronegativity | 0.95 | | Atomic radius | 200 pm | | Atomic radius (calculated) | 219 pm | | Electron configuration | [Kr] 5s2 | | Electrons per shell | 2, 8, 18, 8, 2 | | Number of protons | 38 | | Number of neutrons | 50 |
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Yttrium