-- card: 19843 from stack: in
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-- background id: 2680
-- name: 


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TANTALUM

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73

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Ta

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180.95

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2-8-18-32-11-2

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16.6

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2996° C

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5425° C

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+3+4+5

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BCC

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very hard, heavy, gray metal


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making of light bulb filaments, electrolytic capacitors, lightning arresters, nuclear reactor parts, surgical instruments

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Tantalum is especially resistant to chemical attack below 150° C.
Discovered in 1802 by Ekeberg.