-- card: 23983 from stack: in
-- bmap block id: 0
-- flags: 0000
-- background id: 14320
-- name: Sm


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Sm

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Samarium

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62

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150.36

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7.520

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1074

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1794

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+2,+3

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(Samarskite, a mineral) Discovered in 1879 by Leqoc de Boisbaudran in the mineral samarskite, named after a Russian mine official, Colonel Samarski. Found with other rare earth elements in minerals including monazite and bastanite. 

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silver luster,  rare earth metal, fairly stable in air, it ignites in air at 150 C, 16 isotopes

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used for carbon arc lighting in the movie industry, magnetic material with high resistance to demagnetization, optical glasses, optical lasers, phosphors sensitive to infrared, absorber in nuclear reactors.

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0.162

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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  10   6   2    6               2