Strontium

Atomic symbol: Sr
Atomic number: 38
Atomic mass: 87.62

Appearance: Soft, silver-white yellowish solid at 25°C

Group: 2
Period: 5
Series: Alkaline earth metals
Block: s
Electron configuration: 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 5s²

Highly chemically reactive.

Burns with a crimson-red flame color.

Fun Fact! Strontium causes paint to glow in the dark.