-- card: 33612 from stack: in
-- bmap block id: 0
-- flags: 0000
-- background id: 14320
-- name: W


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W

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Tungsten

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74

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19.3

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183.85

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3410

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5930

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+2,+3,+4,+5,+6

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(Swedish, tung and stan, heavy stone; original name was Wolfram) Discovered in 1783 by d'Elhujar. Has the highest melting point and the lowest vapor pressure of any metal.  Found in wolframite ore. China produces 75 % of the world's tungsten.

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transition metal, hard, gray, brittle, resistant to corrosion

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filaments for lamps and light bulbs, additive to iron to increase strength, TV tubes      (electron tubes), x-ray targets, heating elements, making high-speed steel for cutting tools

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0.130

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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  14   2    6   4         2