Periodic Table -> Thorium


Thorium Details

Thorium Symbol: Th

Thorium Atomic Number: 90

Thorium Atomic Weight: 232.038

What is Thorium?

Grey radioactive metallic element. Belongs to actinoids. Found in monazite sand in Brazil, India and the US. Thorium-232 has a half-life of 1.39x10^10 years. Can be used as a nuclear fuel for breeder reactors. Thorium-232 captures slow neutrons and breeds uranium-233. Discovered by Jons J. Berzelius in 1829.

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