The concentration of thorium in the Earth crust is cca. 6 ppm.
Thorium itself is odorless in its natural state. However, thorium compounds may have a slight metallic or musty odor. It is always important to handle thorium with proper precautions due to its radioactive properties.
Some thorium ores are monazite, thorianite, thorite.
Thorium is generally known by its chemical name "Thorium." However, it may also be referred to as "Th" on the periodic table.
Thorium is a solid metal.
Thorium is a tetravalent element (4+).
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.
The only common thorium oxide formula is ThO2.
The common minerals of thorium are: monazite, thorianite, thorite.
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 carbide is a systematic unique name in chemistry.
+4 is the most common and the most stable oxidation number
Sulfur is of course more common.
Thorium, with the chemical symbol Th, is the chemical element with the atomic number 90.
Thorium and fluorine Thorium trifluoride - ThF3 Thorium tetrafluoride - ThF4
Thorium is a natural, radioactive, chemical element; chemically, thorium is homogeneous.
Also thorium.
The chemical symbol of thorium is Th.