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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

'What a wonderful and amazing scheme have we here of the magnificent vastness of the Universe! So many Suns, so many Earths ...!'

Christiaan Huygens
(1629-1695)


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