yttrium
E600126
Yttrium is a silvery transition metal commonly associated with the rare earth elements and widely used in electronics, lasers, and phosphors for displays and lighting.
All labels observed (1)
| Label | Occurrences |
|---|---|
| yttrium canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T6534263 — 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: yttrium Context triple: [lanthanides, oftenGroupedWith, yttrium]
-
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.
neptunium
Neptunium is a radioactive, synthetic actinide metal and the first transuranium element, used mainly in nuclear research and reactor applications.
-
C.
lawrencium
Lawrencium is a synthetic, highly radioactive actinide element with atomic number 103, used primarily for scientific research in nuclear chemistry and physics.
-
D.
beryllium
Beryllium is a lightweight, hard, gray alkaline earth metal used in specialized applications such as aerospace components, nuclear reactors, and X-ray equipment.
-
E.
nobelium
Nobelium is a synthetic, highly radioactive actinide element with atomic number 102, named in honor of Alfred Nobel and used primarily for scientific research.
- 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: yttrium Target entity description: Yttrium is a silvery transition metal commonly associated with the rare earth elements and widely used in electronics, lasers, and phosphors for displays and lighting.
-
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.
neptunium
Neptunium is a radioactive, synthetic actinide metal and the first transuranium element, used mainly in nuclear research and reactor applications.
-
C.
lawrencium
Lawrencium is a synthetic, highly radioactive actinide element with atomic number 103, used primarily for scientific research in nuclear chemistry and physics.
-
D.
beryllium
Beryllium is a lightweight, hard, gray alkaline earth metal used in specialized applications such as aerospace components, nuclear reactors, and X-ray equipment.
-
E.
nobelium
Nobelium is a synthetic, highly radioactive actinide element with atomic number 102, named in honor of Alfred Nobel and used primarily for scientific research.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
chemical element
ⓘ
transition metal ⓘ |
| appearance | silvery metal ⓘ |
| associatedWith | lanthanides ⓘ |
| atomicNumber | 39 ⓘ |
| belongsToSeries |
scandium group
ⓘ
yttrium group ⓘ |
| blockInPeriodicTable | d-block ⓘ |
| boilingPoint | 3338 °C ⓘ |
| CASNumber | 7440-65-5 ⓘ |
| chemicalSymbol | Y ⓘ |
| crystalStructure | hexagonal close-packed ⓘ |
| densityAtRoomTemperature | 4.47 g/cm³ ⓘ |
| discoveredBy | Johan Gadolin ⓘ |
| discoveryYear | 1794 ⓘ |
| electronegativityPauling | 1.22 ⓘ |
| elementCategory |
rare earth element
ⓘ
transition metal ⓘ |
| formsCompound |
yttrium aluminum garnet
ⓘ
yttrium barium copper oxide ⓘ yttrium iron garnet ⓘ yttrium oxide ⓘ |
| groupInPeriodicTable | 3 ⓘ |
| isotopes | yttrium-89 ⓘ |
| meltingPoint | 1526 °C ⓘ |
| mostAbundantIsotope | yttrium-89 ⓘ |
| namedAfter |
Ytterby
ⓘ
Ytterby, Sweden ⓘ
linked to:
Ytterby
|
| naturalIsotopesCount | 1 ⓘ |
| occursInMineral |
monazite
ⓘ
xenotime ⓘ |
| oxidationState | +3 ⓘ |
| periodInPeriodicTable | 5 ⓘ |
| radioisotope |
yttrium-86
ⓘ
yttrium-90 ⓘ yttrium-91 ⓘ |
| radioisotopeUse | yttrium-90 radioembolization ⓘ |
| standardAtomicWeight | 88.90584 ⓘ |
| standardState | solid ⓘ |
| usedIn |
YAG lasers
ⓘ
cancer radiotherapy ⓘ ceramics ⓘ electronic components ⓘ high-temperature superconductors ⓘ medical imaging ⓘ microwave filters ⓘ phosphors ⓘ red phosphors for CRTs and LEDs ⓘ solid-state lasers ⓘ |
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: yttrium Description of subject: Yttrium is a silvery transition metal commonly associated with the rare earth elements and widely used in electronics, lasers, and phosphors for displays and lighting.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.