beryllium
E460131
Beryllium is a lightweight, hard, gray alkaline earth metal used in specialized applications such as aerospace components, nuclear reactors, and X-ray equipment.
All labels observed (2)
| Label | Occurrences |
|---|---|
| beryllium canonical | 1 |
| beryllium is a chemical element | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4700716 — 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: beryllium Context triple: [The Neutron (1932 paper), usedTargetMaterial, beryllium]
-
A.
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.
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B.
Boric
Boric is the surname of Gabriel Boric, the Chilean politician who became one of the world’s youngest heads of state when he was elected President of Chile.
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C.
Albium Ingaunum
Albium Ingaunum was an important ancient Ligurian coastal city, located in what is now Albenga on the Italian Riviera.
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D.
Element 14
Element 14 was a technology company formed from the remnants of Acorn Computers, focusing on advanced semiconductor and digital TV technologies.
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E.
Beryl
Beryl is a given name that can be used for people of any gender, historically more common as a female name in English-speaking countries.
- 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: beryllium Target entity description: Beryllium is a lightweight, hard, gray alkaline earth metal used in specialized applications such as aerospace components, nuclear reactors, and X-ray equipment.
-
A.
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.
-
B.
Boric
Boric is the surname of Gabriel Boric, the Chilean politician who became one of the world’s youngest heads of state when he was elected President of Chile.
-
C.
Albium Ingaunum
Albium Ingaunum was an important ancient Ligurian coastal city, located in what is now Albenga on the Italian Riviera.
-
D.
Element 14
Element 14 was a technology company formed from the remnants of Acorn Computers, focusing on advanced semiconductor and digital TV technologies.
-
E.
Beryl
Beryl is a given name that can be used for people of any gender, historically more common as a female name in English-speaking countries.
- F. None of above. chosen
Statements (69)
| Predicate | Object |
|---|---|
| instanceOf |
alkaline earth metal
ⓘ
chemical element ⓘ metal ⓘ |
| alloyWith |
aluminum
ⓘ
copper ⓘ magnesium ⓘ nickel ⓘ |
| appearance |
gray
ⓘ
steel-gray ⓘ |
| atomicNumber | 4 ⓘ |
| block | s-block ⓘ |
| boilingPoint | 2469 °C ⓘ |
| CASNumber | 7440-41-7 ⓘ |
| chemicalSymbol | Be ⓘ |
| commonAlloy | beryllium copper ⓘ |
| corrosionResistance | good in air ⓘ |
| countryProduction |
China
NERFINISHED
ⓘ
Kazakhstan NERFINISHED ⓘ United States NERFINISHED ⓘ |
| crystalStructure | hexagonal close-packed ⓘ |
| densityAtRoomTemperature | 1.85 g/cm³ ⓘ |
| discoveredBy | Louis Nicolas Vauquelin NERFINISHED ⓘ |
| discoveryYear | 1798 ⓘ |
| elasticModulus | high ⓘ |
| electricalConductivity | good ⓘ |
| electronegativityPauling | 1.57 ⓘ |
| elementCategory | alkaline earth metal ⓘ |
| formsOxide | beryllium oxide ⓘ |
| formsProtectiveOxideLayer | true ⓘ |
| group | 2 ⓘ |
| ionizationEnergyFirst | 9.3227 eV ⓘ |
| isBrittle | true ⓘ |
| isHard | true ⓘ |
| isLightweight | true ⓘ |
| isMonoisotopic | true ⓘ |
| isToxic | true ⓘ |
| magneticOrdering | diamagnetic ⓘ |
| meltingPoint | 1287 °C ⓘ |
| nameOrigin | Greek word beryllos ⓘ |
| naturalIsotope | beryllium-9 ⓘ |
| neutronAbsorptionCrossSection | low ⓘ |
| occursInMineral |
bertrandite
ⓘ
beryl ⓘ |
| oxidationState | +2 ⓘ |
| oxideFormula | BeO ⓘ |
| oxideProperty | amphoteric ⓘ |
| period | 2 ⓘ |
| poissonsRatio | low ⓘ |
| radioisotope |
beryllium-10
NERFINISHED
ⓘ
beryllium-7 ⓘ |
| standardAtomicWeight | 9.0122 ⓘ |
| thermalConductivity | high ⓘ |
| thermalNeutronModerator | true ⓘ |
| toxicityType |
berylliosis
ⓘ
chronic beryllium disease NERFINISHED ⓘ |
| transparentToXrays | true ⓘ |
| use |
X-ray equipment
ⓘ
X-ray tube windows ⓘ aerospace components ⓘ electrical contacts ⓘ gyroscopes ⓘ high-performance springs ⓘ missile components ⓘ neutron moderator ⓘ neutron reflector ⓘ non-sparking tools ⓘ nuclear reactors ⓘ precision instruments ⓘ satellite structures ⓘ |
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: beryllium Description of subject: Beryllium is a lightweight, hard, gray alkaline earth metal used in specialized applications such as aerospace components, nuclear reactors, and X-ray equipment.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
beryllium is a chemical element