indium (In)
E332045
Indium (In) is a soft, silvery-white post-transition metal known for its low melting point, use in electronics and solders, and role in forming transparent conductive coatings such as indium tin oxide.
All labels observed (1)
| Label | Occurrences |
|---|---|
| indium (In) canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T3158623 — 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: indium (In) Context triple: [type-I superconductors, includeExample, indium (In)]
-
A.
Albium Ingaunum
Albium Ingaunum was an important ancient Ligurian coastal city, located in what is now Albenga on the Italian Riviera.
-
B.
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.
-
C.
Plumbago
Plumbago is a genus of flowering plants known for its ornamental blue or white blooms, commonly grown in warm climates as garden and landscape shrubs.
-
D.
Atombaupreis
The Atombaupreis was a German scientific award recognizing outstanding contributions to nuclear physics and atomic research.
-
E.
Zinin
Zinin is a Russian surname most notably associated with chemist Nikolai Zinin, a pioneer in organic chemistry.
- 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: indium (In) Target entity description: Indium (In) is a soft, silvery-white post-transition metal known for its low melting point, use in electronics and solders, and role in forming transparent conductive coatings such as indium tin oxide.
-
A.
Albium Ingaunum
Albium Ingaunum was an important ancient Ligurian coastal city, located in what is now Albenga on the Italian Riviera.
-
B.
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.
-
C.
Plumbago
Plumbago is a genus of flowering plants known for its ornamental blue or white blooms, commonly grown in warm climates as garden and landscape shrubs.
-
D.
Atombaupreis
The Atombaupreis was a German scientific award recognizing outstanding contributions to nuclear physics and atomic research.
-
E.
Zinin
Zinin is a Russian surname most notably associated with chemist Nikolai Zinin, a pioneer in organic chemistry.
- F. None of above. chosen
Statements (65)
| Predicate | Object |
|---|---|
| instanceOf |
chemical element
ⓘ
metal ⓘ post-transition metal ⓘ |
| abundanceInEarthsCrust | very low ⓘ |
| appearance |
lustrous
ⓘ
silvery-white ⓘ |
| application |
electronic components
ⓘ
flat-panel displays ⓘ low-melting-point solders ⓘ nuclear medicine imaging with indium-111 ⓘ semiconductors ⓘ solar cells ⓘ thermal interface materials ⓘ touchscreens ⓘ transparent conductive coatings ⓘ |
| atomicNumber | 49 ⓘ |
| belongsToSeries | boron group elements ⓘ |
| blockInPeriodicTable | p-block ⓘ |
| boilingPoint | 2072 °C ⓘ |
| CASNumber | 7440-74-6 ⓘ |
| chemicalSymbol | In ⓘ |
| crystalStructure | tetragonal ⓘ |
| densityAtRoomTemperature | 7.31 g/cm³ ⓘ |
| discoveredBy |
Ferdinand Reich
ⓘ
Hieronymous Theodor Richter ⓘ |
| discoveryLocation |
Freiberg
ⓘ
surface form:
Freiberg, Saxony
|
| discoveryYear | 1863 ⓘ |
| electricalProperty | good electrical conductivity ⓘ |
| electronConfiguration | [Kr] 4d10 5s2 5p1 ⓘ |
| electronegativityPauling | 1.78 ⓘ |
| elementCategory | post-transition metal ⓘ |
| groupInPeriodicTable | 13 ⓘ |
| isotopicComposition | has two stable isotopes and one quasi-stable isotope ⓘ |
| majorUse | indium tin oxide ⓘ |
| mechanicalProperty |
ductile
ⓘ
malleable ⓘ soft ⓘ |
| meltingPoint | 156.6 °C ⓘ |
| mostCommonOxidationState | +3 ⓘ |
| nameEtymology | named after indigo spectral line ⓘ |
| naturalOccurrence |
also found in lead and tin ores
ⓘ
primarily found in zinc ores ⓘ rare ⓘ |
| oxidationState |
+1
ⓘ
+2 ⓘ +3 ⓘ |
| periodInPeriodicTable | 5 ⓘ |
| productionMethod |
byproduct of lead refining
ⓘ
byproduct of tin refining ⓘ byproduct of zinc refining ⓘ |
| quasiStableIsotope | indium-115 ⓘ |
| radioisotope |
indium-111
ⓘ
indium-114m ⓘ |
| relatedCompound |
indium antimonide
ⓘ
indium arsenide ⓘ indium phosphide ⓘ indium tin oxide ⓘ |
| stableIsotope | indium-113 ⓘ |
| standardAtomicWeight | 114.818 ⓘ |
| standardStateAtSTP | solid ⓘ |
| surfaceProperty |
wets glass
ⓘ
wets many metals ⓘ |
| thermalProperty |
good thermal conductivity
ⓘ
low melting point ⓘ |
| toxicity | low to moderate toxicity ⓘ |
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: indium (In) Description of subject: Indium (In) is a soft, silvery-white post-transition metal known for its low melting point, use in electronics and solders, and role in forming transparent conductive coatings such as indium tin oxide.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.