scandium
E600125
Scandium is a soft, silvery-white transition metal (atomic number 21) used in high-performance alloys and lighting, often associated with the rare earth elements.
All labels observed (1)
| Label | Occurrences |
|---|---|
| scandium canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T6534262 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: scandium Context triple: [lanthanides, oftenGroupedWith, scandium]
-
A.
Vanadium
Vanadium is a hard, silvery-gray transition metal element used in strong alloys and known for imparting green coloration to certain minerals and gemstones.
-
B.
Boron
Boron is a small unincorporated community in Kern County, California, best known for its large open-pit borax mine and its location in the Mojave Desert.
-
C.
Novaesium
Novaesium is the ancient Roman name for the settlement that developed into the modern German city of Neuss, an important military and trading post along the Rhine.
-
D.
Cobalt
Cobalt is a small historic mining town in northeastern Ontario, Canada, known for its early 20th-century silver boom and significant role in Canadian mining history.
-
E.
beryllium
Beryllium is a lightweight, hard, gray alkaline earth metal used in specialized applications such as aerospace components, nuclear reactors, and X-ray equipment.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: scandium Target entity description: Scandium is a soft, silvery-white transition metal (atomic number 21) used in high-performance alloys and lighting, often associated with the rare earth elements.
-
A.
Vanadium
Vanadium is a hard, silvery-gray transition metal element used in strong alloys and known for imparting green coloration to certain minerals and gemstones.
-
B.
Boron
Boron is a small unincorporated community in Kern County, California, best known for its large open-pit borax mine and its location in the Mojave Desert.
-
C.
Novaesium
Novaesium is the ancient Roman name for the settlement that developed into the modern German city of Neuss, an important military and trading post along the Rhine.
-
D.
Cobalt
Cobalt is a small historic mining town in northeastern Ontario, Canada, known for its early 20th-century silver boom and significant role in Canadian mining history.
-
E.
beryllium
Beryllium is a lightweight, hard, gray alkaline earth metal used in specialized applications such as aerospace components, nuclear reactors, and X-ray equipment.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
chemical element
ⓘ
transition metal ⓘ |
| abundanceInEarthsCrust | about 22 ppm ⓘ |
| appearance | silvery-white metal ⓘ |
| associatedWith | rare earth elements ⓘ |
| atomicNumber | 21 ⓘ |
| atomicWeight | 44.955908 ⓘ |
| belongsToSeries | transition metals ⓘ |
| block | d-block ⓘ |
| boilingPointKelvin | 3109 ⓘ |
| CASNumber | 7440-20-2 ⓘ |
| category | metal ⓘ |
| chemicalSymbol | Sc ⓘ |
| commonOxidationState | +3 ⓘ |
| crystalStructure | hexagonal close-packed ⓘ |
| densityAtRoomTemperature | 2.985 g/cm³ ⓘ |
| discoveredBy | Lars Fredrik Nilson NERFINISHED ⓘ |
| discoveryLocation | Sweden NERFINISHED ⓘ |
| electricalResistivity | 0.00000061 Ω·m at 20 °C ⓘ |
| electronConfiguration | [Ar] 3d1 4s2 ⓘ |
| electronegativityPauling | 1.36 ⓘ |
| firstIonizationEnergyKilojoulePerMole | 633.1 ⓘ |
| forms |
Sc2O3
ⓘ
ScCl3 ⓘ ScF3 ⓘ |
| group | 3 ⓘ |
| isConsidered | rare ⓘ |
| isotopes | 45Sc ⓘ |
| magneticOrdering | paramagnetic ⓘ |
| meltingPointKelvin | 1814 ⓘ |
| mostAbundantIsotope | 45Sc ⓘ |
| namedAfter | Scandinavia NERFINISHED ⓘ |
| occursInMineral |
euxenite
ⓘ
gadolinite NERFINISHED ⓘ thortveitite ⓘ |
| oxidationState | +3 ⓘ |
| period | 4 ⓘ |
| radioactiveIsotope |
44Sc
ⓘ
46Sc ⓘ 47Sc ⓘ |
| standardState | solid ⓘ |
| thermalConductivity | 15.8 W/(m·K) ⓘ |
| usedIn |
aerospace components
ⓘ
electronics research ⓘ high-intensity discharge lamps ⓘ high-performance aluminum alloys ⓘ metal halide lamps ⓘ solid oxide fuel cells ⓘ sports equipment ⓘ |
| yearDiscovered | 1879 ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: scandium Description of subject: Scandium is a soft, silvery-white transition metal (atomic number 21) used in high-performance alloys and lighting, often associated with the rare earth elements.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.