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To obtain pure thorium metal it is necessary to separate thorium from other elements.
Common compounds of thorium: thorium dioxide, thorium trifluoride, thorium tetrafluoride, thorium tetrachloride, thorium triiodide, thorium diiodide, thorium tetraiodide, thorium nitrate, thorium oxalate, thorium carbide, thorium sulfides, thorium nitride, thorium oxinate, etc.
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Hazards and Health Considerations: Thorium presents both a toxic and radiological hazard. Toxicologically, it causes heavy metal poisoning similar to lead or the uranium isotopes. Biologically, thorium accumulates in the skeletal system where it has a biological half-life of 200 years, the same as plutonium. An M 17 protective mask and standard anti-contamination clothing will adequately protect against thorium.
Thorium and fluorine Thorium trifluoride - ThF3 Thorium tetrafluoride - ThF4
Thorium don't smell.
Thorium (Th).
Thorium is a natural, radioactive, chemical element; chemically, thorium is homogeneous.
Thorium-232 is appearing in the thorium series.
Thorium: soft but strong! Thorium is totally radioactive!
Thorium is a tetravalent element. Thorium react slowly with water; thorium can react with concentrated nitric acid and hydrogen chloride. Thorium can react with the majority of other chemical elements. The Pauling electronegativity of thorium is 1,3.