thorium
E909377
Norse god
actinide metal
chemical element
fertile nuclear material
radioactive metal
radioisotope
refractory ceramic
Thorium is a naturally occurring radioactive metal and fertile nuclear material considered a potential alternative fuel for advanced nuclear reactors.
Observed surface forms (3)
| Surface form | Occurrences |
|---|---|
| thorium dioxide | 0 |
| thorium-232 | 0 |
| Thor | 0 |
Statements (60)
| Predicate | Object |
|---|---|
| instanceOf |
Norse god
ⓘ
actinide metal ⓘ chemical element ⓘ fertile nuclear material ⓘ radioactive metal ⓘ radioisotope ⓘ refractory ceramic ⓘ |
| advantage |
high natural abundance
ⓘ
lower long-lived transuranic waste production potential ⓘ proliferation resistance relative to uranium-plutonium cycle ⓘ |
| appearance | silvery-white metal ⓘ |
| atomicNumber | 90 ⓘ |
| averageCrustalAbundance | about 10 ppm ⓘ |
| belongsToGroup | actinide series NERFINISHED ⓘ |
| block | f-block ⓘ |
| boilingPoint | about 4788 °C ⓘ |
| chemicalFormula | ThO2 ⓘ |
| chemicalSymbol | Th ⓘ |
| commonOxidationState | +4 ⓘ |
| consideredFor |
advanced nuclear reactors
ⓘ
heavy water reactors ⓘ high-temperature gas-cooled reactors ⓘ molten salt reactors ⓘ nuclear fuel cycle ⓘ |
| crystalStructure | face-centered cubic ⓘ |
| decayMode | alpha decay ⓘ |
| decaySeries | thorium series ⓘ |
| densityAtRoomTemperature | about 11.7 g/cm³ ⓘ |
| discoveredBy | Jöns Jakob Berzelius NERFINISHED ⓘ |
| discoveryYear | 1828 ⓘ |
| electronegativityPauling | 1.3 ⓘ |
| fertileTo | uranium-233 ⓘ |
| formsOxide | thorium dioxide ⓘ |
| foundIn | Earth’s crust ⓘ |
| halfLife | about 14.05 billion years ⓘ |
| hazard |
chemical toxicity
ⓘ
radiotoxicity ⓘ |
| massNumber | 232 ⓘ |
| meltingPoint |
1750 °C
ⓘ
about 3390 °C ⓘ |
| moreAbundantThan | uranium ⓘ |
| mostAbundantIsotope | thorium-232 ⓘ |
| namedAfter | Thor NERFINISHED ⓘ |
| naturalIsotope | thorium-232 ⓘ |
| neutronCapture | fertile ⓘ |
| occursNaturallyIn |
monazite
ⓘ
thorite ⓘ uraninite ⓘ |
| oxidationState | +4 ⓘ |
| period | 7 ⓘ |
| primaryOxidationStateInCompounds | +4 GENERATED ⓘ |
| radioactive | true ⓘ |
| regulatoryStatus | controlled radioactive material in most countries ⓘ |
| standardAtomicWeight | 232.0377 ⓘ |
| usedIn |
aerospace alloys
ⓘ
gas mantles ⓘ high-temperature ceramics ⓘ magnesium alloys ⓘ scientific instrumentation ⓘ welding electrodes ⓘ |
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.