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Th

Thorium
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Thorium was discovered by Jöns Jakob Berzelius (Sweden) in 1828. Named after Thor, the mythological Scandinavian god of war. It is heavy, grey, soft, malleable, ductile, radioactive metal. Tarnishes in air; reacts with water. Reacts violently with oxidants.
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METALLI DI TRANSIZIONE: ATTINIDI |
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ENERGIE DI IONIZZAZIONE ED ABBONDANZA |
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Isotopo |
Massa atomica relativa |
Abbondanza (%) |
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229Th | 229.031755(3) | * |
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232Th | 232.038050(2) | 100 |
Thorium is found in various minerals like monazite and thorite. Used in making strong alloys. Also in ultraviolet photoelectric cells. It is a common ingredient in high-quality lenses. Bombarded with neutrons make uranium-233, a nuclear fuel. The price of 99.8 % pure thorium powder is 464.20 € for 10 g.
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POTENZIALI DI RIDUZIONE STANDARD |
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Semi-Reazione |
Eo / V |
Annotazione |
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Th4+ + 4e- Th(s) |
- 1.90 |
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Th(OH)4(s) + 4e- Th(s) + 4OH- |
- 2.48 |
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