Name Strontium
Symbol Sr
Atomic Number 38
Atomic Mass 87.62 atomic mass units
Number of Protons 38
Number of Neutrons 50
Number of Electrons 38
Melting Point 769.0 C
Boiling Point 1384.0 C
Density 2.54 grams per cubic centimeter
Normal Phase Solid
Family Alkaline Earth Metals
Period 5
Cost $100 per 100 grams



Origin of Name After Strotian, a Scottish town
Date and Place of Discovery In 1790 in Scotland
Discovered by Adair Crawford
Common Compounds
Interesting facts
  • It does not occur as a free element in nature.
  • It is softer than calcium.
  • It is silvery in appearance until exposed to the air when it turns yellow.
  • It bursts into flames when exposed to air.
Common Uses
  • Fireworks
  • Flairs
  • Nuclear production of electricity
  • Glass for color television tubes
  • Optical materials
  • Refinement of zinc


Photo Courtesy of
Cary Academy
Chemical Elements
Jefferson Labs
Web Elements

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