|
gptkbp:instanceOf
|
gptkb:chemical_compound
|
|
gptkbp:appearance
|
silvery
|
|
gptkbp:atomicNumber
|
90
|
|
gptkbp:atomicWeight
|
232.0377
|
|
gptkbp:block
|
f-block
|
|
gptkbp:boilingPoint
|
5061 K
|
|
gptkbp:CASNumber
|
7440-29-1
|
|
gptkbp:category
|
actinide series
metal
radioactive element
nuclear material
|
|
gptkbp:crystalSystem
|
face-centered cubic
|
|
gptkbp:density
|
11.7 g/cm³
|
|
gptkbp:discoveredBy
|
gptkb:Jöns_Jacob_Berzelius
|
|
gptkbp:discoveredIn
|
1828
|
|
gptkbp:electricalResistivity
|
15 nΩ·m (at 20 °C)
|
|
gptkbp:electronegativity
|
1.3 (Pauling scale)
|
|
gptkbp:event
|
naturally occurring
|
|
gptkbp:foundIn
|
gptkb:thorite
monazite
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Thorium
|
|
gptkbp:mainIsotope
|
gptkb:thorium-232
|
|
gptkbp:meltingPoint
|
2023 K
|
|
gptkbp:molarHeatCapacity
|
26.23 J/(mol·K)
|
|
gptkbp:namedAfter
|
gptkb:Thor
|
|
gptkbp:oxidationStates
|
+4
|
|
gptkbp:period
|
7
|
|
gptkbp:radioactive
|
true
|
|
gptkbp:relatedGroup
|
actinide
|
|
gptkbp:riskFactor
|
radioactive toxicity
|
|
gptkbp:symbol
|
Th
|
|
gptkbp:thermalConductivity
|
54 W/(m·K)
|
|
gptkbp:uses
|
gptkb:nuclear_reactor
alloying agent
mantles for gas lamps
|
|
gptkbp:bfsParent
|
gptkb:Molten_Salt_Reactor
|
|
gptkbp:bfsLayer
|
5
|