ytterbium
E605200
Ytterbium is a soft, silvery rare-earth metal used in specialized alloys, lasers, and as a dopant in optical and electronic applications.
All labels observed (1)
| Label | Occurrences |
|---|---|
| ytterbium canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T6534231 — 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: ytterbium Context triple: [lanthanides, hasElement, ytterbium]
-
A.
yttrium
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.
-
B.
lanthanum
Lanthanum is a soft, silvery-white rare-earth metal that serves as the first element of the lanthanide series and is used in applications such as optical glass, catalysts, and battery electrodes.
-
C.
beryllium
Beryllium is a lightweight, hard, gray alkaline earth metal used in specialized applications such as aerospace components, nuclear reactors, and X-ray equipment.
-
D.
scandium
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.
-
E.
seaborgium
Seaborgium is a synthetic, highly radioactive transition metal and transactinide element with the symbol Sg and atomic number 106.
- 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: ytterbium Target entity description: Ytterbium is a soft, silvery rare-earth metal used in specialized alloys, lasers, and as a dopant in optical and electronic applications.
-
A.
yttrium
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.
-
B.
lanthanum
Lanthanum is a soft, silvery-white rare-earth metal that serves as the first element of the lanthanide series and is used in applications such as optical glass, catalysts, and battery electrodes.
-
C.
beryllium
Beryllium is a lightweight, hard, gray alkaline earth metal used in specialized applications such as aerospace components, nuclear reactors, and X-ray equipment.
-
D.
scandium
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.
-
E.
seaborgium
Seaborgium is a synthetic, highly radioactive transition metal and transactinide element with the symbol Sg and atomic number 106.
- F. None of above. chosen
Statements (51)
| Predicate | Object |
|---|---|
| instanceOf |
chemical element
ⓘ
ytterbium isotope ⓘ |
| appearance | soft silvery metal ⓘ |
| atomicNumber | 70 ⓘ |
| blockInPeriodicTable | f-block ⓘ |
| boilingPoint | 1196 °C ⓘ |
| CASNumber | 7440-64-4 ⓘ |
| category |
lanthanoid
ⓘ
rare-earth element ⓘ |
| chemicalSymbol | Yb ⓘ |
| crystalStructure | face-centered cubic ⓘ |
| densityAtRoomTemperature | 6.90 g/cm³ ⓘ |
| discoveredBy | Jean Charles Galissard de Marignac ⓘ |
| electronConfiguration | [Xe] 4f14 6s2 ⓘ |
| electronegativityPauling | 1.1 ⓘ |
| foundInMineral |
monazite
ⓘ
xenotime ⓘ |
| groupInPeriodicTable | lanthanides ⓘ |
| isotopes |
ytterbium-168
ⓘ
ytterbium-170 ⓘ ytterbium-171 ⓘ ytterbium-172 ⓘ ytterbium-173 ⓘ ytterbium-174 ⓘ ytterbium-176 ⓘ |
| magneticOrdering | paramagnetic ⓘ |
| meltingPoint | 819 °C ⓘ |
| mostCommonOxidationState | +3 ⓘ |
| namedAfter |
Sweden
ⓘ
Ytterby ⓘ |
| nuclearSpin | 1/2 ⓘ |
| oxidationState |
+2
ⓘ
+3 ⓘ |
| periodInPeriodicTable | 6 ⓘ |
| radioactivity | stable element ⓘ |
| reactivity |
reacts with dilute acids
ⓘ
slowly tarnishes in air ⓘ |
| safety | low to moderate toxicity ⓘ |
| standardAtomicWeight | 173.045 ⓘ |
| standardStateAtSTP | solid ⓘ |
| thermalNeutronCaptureCrossSection | high ⓘ |
| uses |
component of specialized alloys
ⓘ
dopant in electronic materials ⓘ dopant in fiber lasers ⓘ dopant in optical fibers ⓘ dopant in solid-state lasers ⓘ high-intensity laser amplifiers ⓘ medical laser systems ⓘ research on quantum gases ⓘ source in atomic clocks ⓘ |
| yearOfDiscovery | 1878 ⓘ |
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: ytterbium Description of subject: Ytterbium is a soft, silvery rare-earth metal used in specialized alloys, lasers, and as a dopant in optical and electronic applications.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.