Symbol
Sr
Atomic Number
38
Atomic Mass
87.62
Protons
38
Neutrons
50
Electrons
38
Type
Alkaline Earth Metal
Isotopes
Strontium-84, Strontium-86, Strontium-87, Strontium-88
Discovery Year
1790
Discovered By
Adair Crawford
Group
2
Period
5
Boiling Point
2775°F
Melting Point
1290°F
Electron Configuration
[Kr] 5s²
Density (g/cm³)
2.64
Crystal Structure
Body-centered cubic
Magnetism
Paramagnetic
Abundance in Earth's Crust
0.034%
Phase at Room Temperature
Solid