Thorium (11553 bytes)
5: | colspan="2" align="center" | [[actinium]] - '''thorium''' - [[protactinium]]
16: | thorium, Th, 90
150: '''Thorium''' is a [[chemical element]] in the [[periodic ta...
153: ...oints of all oxides (3300°C). When heated in air, thorium metal [[turnings]] ignite and burn brilliantly wi...
156: Applications of thorium:

Thorium dioxide (2047 bytes)
1: ...rium dioxide''' (ThO₂), also called '''thorium(IV) oxide''' (IUPAC) is a white, crystalline powd...
3: ...as a [[nuclear]] fuel. (Refer to the article of [[thorium]] for more information on this application.)
4: ... in flame spraying and high temperature ceramics. Thorium dioxide was the primary ingredient in the [[X-ray...
6: ...s the high temperature mechanical properties, and thorium helps stimulate the emmission of [[electron|elect...
10: The melting point of thorium oxide is 3300°C - the highest of all oxides. Only...

Uranium-thorium dating (2189 bytes)
1: ...estored between the [[radioactive]] [[isotope]] [[thorium]]-230 and its radioactive parent [[uranium]]-234 ...
3: ...ts parent isotope. At equilibrium, the number of thorium-230 decays per year within a sample is equal to t...
5: ... [[precision]] to which we know the half-lives of thorium-230 and uranium-234. Note that to calculate an a...

Sylvania Electric Products (696 bytes)
1: ...is experiment was the reprocessing and burning of thorium metal powder sludges that went unprocessed during...
3: ... that at the time the metallurgical properties of Thorium were not well understood. However

Spontaneous fission (1241 bytes)
3: ...lly feasible for [[atomic mass]]es above 230 amu (thorium).
5: For uranium and thorium, the spontaneous fission mode of decay is not see...

Monazite (1515 bytes)
3: ...[rare earth]] metals and an important source of [[thorium]], [[lanthanum]], and [[cerium]]. It occurs usual...
11: Monazite is an important [[ore]] for thorium, lanthanum, and cerium. It is often found in [[pl...
13: Because of the presence of thorium within monazite, it can be highly [[radioactive]]...

Sayh al Uhaymir 169 (713 bytes)
3: ...urring [[radioactive]] elements, [[potassium]], [[thorium]], and [[uranium]] have been segregated in the li...

Gas mantle (1906 bytes)
5: ...failed in [[1889]]. A new mixture of 99 percent [[thorium(IV) oxide]] and 1 percent [[cerium]] oxide gave o...
9: ...are. Owing to concerns about the radioactivity of thorium, alternatives are now used in some countries, but...

Rubbia reactor (1086 bytes)
4: [[Thorium]] fuel is bombarded with a high-energy [[neutron]...
10: *Thorium is so abundant as to be practically inexhaustible...

Thorite (1756 bytes)
1: ...tive]]. It was named in [[1829]] to reflect its [[thorium]] content.

Dating methods (962 bytes)
7: U-Th-Pb[[uranium]]/thorium/lead
15: ...sult of radioactive decay of terrestrial uranium, thorium and the like corrently suggest an outer limit to ...

Energy amplifier (3381 bytes)
4: ... to 1 [[GeV]], and a fuel/moderator target with [[thorium]] as fuel and [[lead]] as a moderator.
13: ...ng costly [[isotope]] separation. There is enough thorium to generate energy for thousands of years at curr...
23: ...elf does not produce [[CO2|CO₂]]. When thorium production and power station construction are con...
26: ...ce [[neutron]]s by the process called spallation. Thorium nuclei absorb neutrons, forming fissile [[Uranium...

Cholangiocarcinoma (368 bytes)
1: ...s such as [[polyvinyl chloride]] or Thorotrast ([[thorium dioxide]]).

Unbibium (1581 bytes)
9: | rowspan="3" valign="center" | [[Thorium|Th]]<br>
44: '''Unbibium''' (eka-thorium) is the [[IUPAC]] name of the element 122, which ...

Metamictization (1826 bytes)
5: ...is almost invariably found completely metamict as thorium and uranium are part of its essential [[chemical ...

Nucleocosmochronology (607 bytes)
1: ...ting by means of radioactive decay in the Uranium-Thorium system. Both of these [[elements]] have long [[ha...

Radiogenic (495 bytes)
3: ...d from the radioactive decay of [[uranium]] and [[thorium]]. Specifically, Pb-206 is formed from U-238, Pb-...

Tri-n-butyl phosphate (518 bytes)
3: ...ectively extract [[uranium]], [[plutonium]], or [[thorium]] from acid solutions. One solvent used for this...

Rare earth (809 bytes)
4: ...m]], [[ytterbium]], [[lutetium]], [[actinium]], [[thorium]], [[protactinium]], [[uranium]], [[neptunium]], ...

Group element (829 bytes)
3: ...ium]] of the [[Lanthanides]]; and [[Actinium]], [[Thorium]], [[Protactinium]], [[Uranium]], [[Neptunium]], ...

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