Thorium is only weakly radioactive, emitting alpha particles which can barely penetrate human skin, thus exposure to it externally could not kill you. Thorium could be dangerous inside the body, where it could trigger cancers in internal organs. A bigger danger is that thorium decay gives rise to radioactive radon gas which could conceivably build up to a dangerous level if stored in a confined space. As a nuclear fuel, thorium is very much safer than uranium and plutonium. Thorium is present in most soils in fairly significant quantities. Overall, it is very very unlikely to cause you any harm whatsoever unless perhaps you work with it routinely without taking any precautions.
Thorium: soft but strong! Thorium is totally radioactive!
The common minerals of thorium are: monazite, thorianite, thorite.
Some thorium minerals are: monazite, thorianite, thorite.
Important minerals of thorium are: monazite, thorite, thorianite, allanite.
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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.
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.
Also thorium.
Bitumen has not thorium.
Thorium is an inner transition element, which means it is a metal.