38Sr
Strontium
스트론튬 · ストロンチウム
Alkaline earth
Atomic number38
ElementSr — Strontium
Atomic mass87.62
CategoryAlkaline earth
Group2
Period5
Electron config[Kr] 5s2
Shells2,8,18,8,2
State (RT)Solid
Melting pt777°C
Boiling pt1382°C
Electronegativity0.95
Discovered1790
Main usesRed fireworks, glass
2 · 8 · 18 · 8 · 2