-- card: 24098 from stack: in
-- bmap block id: 0
-- flags: 0000
-- background id: 14320
-- name: Eu


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Eu

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Europium

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63

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151.96

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5.244

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822

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1527

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+2,+3

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(named after Europe) Discovered by Demarcay in 1901. Found with rare earth metals Sm and Gd in monazite and balsanite. The pure metal was not isolated until recently. 

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rare earth metal, silvery-white, ignites in air at about 150 to 180 C, ductile,rarest and most expensive of the rare earth metals, most reactive of the rare earth metals, 17 isotopes, oxidizes instantly in air, reacts with water

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isotopes used as neutron absorbers for nuclear reactions, phophor activator, red phosphor in color TV tubes,added to plastic for laser material

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0.185

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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   7   2    6               2