Atomic Properties
- Atomic Number
- 38
- Atomic Mass
- 87.6200 u
- Electron Configuration
- [Kr] 5s2
- Electronegativity
- 0.95
- Block
- s-block
- Group
- 2
- Period
- 5
Physical Properties
- Phase (STP)
- solid
- Melting Point
- 1050.00 K
- Boiling Point
- 1650.00 K
- Density
- 2.6400 g/cm³
About Strontium
Produces red color in fireworks; used in flares and glow-in-dark paints.
Isotopes of Strontium
Strontium has 4 naturally occurring isotopes.
| Isotope | Mass Number | Atomic Mass (u) | Abundance | Type |
|---|---|---|---|---|
| 84Sr | 84 | 83.9134191 | 0.5600% | Stable |
| 86Sr | 86 | 85.9092606 | 9.860% | Stable |
| 87Sr | 87 | 86.9088775 | 7.000% | Stable |
| 88Sr | 88 | 87.9056125 | 82.58% | Stable |
Data source: NIH PubChem (aggregated from IUPAC, NIST)