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Sr - Strontium

Strontium

 Strontium 
Sr
Atomic Number: 38
Atomic Weight: 87.62
Element Type: Alkali Earth Metal
Crystal Structure: Cubic Face Centered
Melting Point: 777.0°C = 1430.6°F = 1050.15 K
Boiling Point: 1382.0°C = 2519.6°F = 1655.15 K
Critical Temp: °C = °F = K
Atomic Radius: 2.45 Å (Å = Angstrom = 10-10 m)
Covalent Radius: 1.91 Å
Electronegativity: 0.95

History

(Strontian, town in Scotland) Isolated by Davey by electrolysis in 1808; however, AdairCrawford in 1790 recognized a new mineral (strontianite) as differing from other bariumminerals.


Sources


Science Quote

'The true spirit of delight, the exaltation, the sense of being more than Man, which is the touchstone of the highest excellence, is to be found in mathematics as surely as in poetry.'

Bertrand Russell
(1872-1970)


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