Strontium [Sr] (CAS-ID: 7440-24-6) locate me
An: 38 N: 50 Am: 87.62 g/mol
Group No: 2  Group Name: Alkaline earth metal
Block: s-block  Period: 5
State: solid at 298 K
Colour: silvery white Classification: Metallic
Boiling Point: 1655K (1382'C)
Melting Point: 1050K (777'C)
Density: 2.64g/cm3
Shell Structure diagram | Atomic Radius diagram
Isotopes | More Info | Compounds
Discovery Information
Who: A. Crawford
When: 1790
Where: Scotland
Name Origin
From Strontian a small Scottish town.
Sources
Found in minerals celestite and strontianite.
Uses
Used in flares and fireworks for its crimson colour. It's primary use is glass for colour television cathode ray tubes, but it is also used in nuclear batteries in buoys, some sensitive teeth toothpastes (as SrCl2), magnets, zinc refining and phosphorescent paint.
Strontium titanate (SrTiO3) has an extremely high refractive index and an optical dispersion greater than that of diamond, making it useful in a variety of optics applications.
Notes
Strontium was first isolated by Sir Humphry Davy in 1808.
In its pure form strontium is extremely reactive with air and spontaneously combusts, it is therefore considered to be a fire hazard.
Images
Strontium burning with a brilliant crimson colour Strontium burning with a brilliant crimson colour