Thorium

en: Thorium   –   de: Thorium   –   fr: Thorium   –   it: Torio   –   ja: トリウム   –   ru: Торий   -   tr: Toryum
Position in the periodic table symbol: Th atomic number: 90 chemical series: actinides
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		sample	electron shell

Miscellaneous

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  Monazite, a rare-earth-and-thorium-phosphate mineral is the primary source of the world's thorium

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  Monazite - tabular crystal, Rostadheia, Iveland, Norway