-- card: 26418 from stack: in
-- bmap block id: 0
-- flags: 0000
-- background id: 14320
-- name: Sr


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Sr

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Strontium

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38

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87.62

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2.54

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769

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1384

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+2

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(Strontian, town in Scotland) Isolated by Davy in 1808. Found mainly as celestite and strontianite. Sr-90 has a half-life of 28 years.

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soft, decomposes in water, alkaline earth metal, silvery, tarnishes yellow, ignites in air when finely divided, salts are colorful

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fire works, flares, Sr-90 is a radioactive isotope produced by nuclear fallout, Sr-90 has the potential for use as lightweight nuclear producing electricity, used to produce glass for color television tubes, refining zinc, optical materials

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0.191

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Electron Configuration:

1s  2s  2p  3s  3p  3d  4s  4p  4d  4f  5s  5p  5d  5f  6s  6p  6d  6f  7s 
 2   2    6    2    6   10   2   6              2