| Símbolo | Sr |
| Número atómico | 38 |
| Grupo | 2 (Alcalinotérreos) |
| Período | 5 |
| Bloque | s |
| Clasificación | Alcalinotérreos |
| Apariencia | - |
| Color | Plata |
| Número de protones | 38 p+ |
| Número de neutrones | 50 n0 |
| Número de electrones | 38 e- |
| Fase en STP | Sólido |
| Densidad | 2.64 g/cm3 |
| Peso atómico | 87.621 u |
| Punto de fusión | 1050 K 776.85 °C 1430.33 °F |
| Punto de ebullición | 1650 K 1376.85 °C 2510.33 °F |
| Entalpía de vaporización | 136.9 kJ/mol |
| Electronegatividad (Escala de Pauling) | 0.95 |
| Afinidad electrónica | 5.023 kJ/mol |
| Estado de oxidación | +1, +2 (a strongly basic oxide) |
| Energía de ionización |
|
| Descubrimiento | William Cruickshank (1787) |
| Primer aislamiento | Humphry Davy (1808) |
Descubrimiento de estroncio Both strontium and strontianite are named after Strontian, a village in Scotland near which the mineral was discovered in 1790 by Adair Crawford and William Cruickshank; it was identified as a new element the next year from its crimson-red flame test color. The element was eventually isolated by Sir Humphry Davy in 1808 by the electrolysis of a mixture containing strontium chloride and mercuric oxide, and announced by him in a lecture to the Royal Society on 30 June 1808. In keeping with the naming of the other alkaline earths, he changed the name to strontium. | |