lanthanides
E152311
Lanthanides are a series of 15 metallic chemical elements from lanthanum to lutetium, known for their similar properties, high reactivity, and key roles in advanced technologies such as magnets, lasers, and electronics.
All labels observed (4)
| Label | Occurrences |
|---|---|
| europium | 1 |
| lanthanides canonical | 1 |
| neodymium | 1 |
| terbium | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1325576 — 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: lanthanides Context triple: [Allen electronegativity scale, appliesTo, lanthanides]
-
A.
lawrencium
Lawrencium is a synthetic, highly radioactive actinide element with atomic number 103, used primarily for scientific research in nuclear chemistry and physics.
-
B.
einsteinium
Einsteinium is a synthetic, highly radioactive actinide element named after Albert Einstein and used mainly for scientific research.
-
C.
mendelevium
Mendelevium is a synthetic, radioactive actinide element with atomic number 101, named after Dmitri Mendeleev and produced only in particle accelerators.
-
D.
seaborgium
Seaborgium is a synthetic, highly radioactive transition metal and transactinide element with the symbol Sg and atomic number 106.
-
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: lanthanides Target entity description: Lanthanides are a series of 15 metallic chemical elements from lanthanum to lutetium, known for their similar properties, high reactivity, and key roles in advanced technologies such as magnets, lasers, and electronics.
-
A.
lawrencium
Lawrencium is a synthetic, highly radioactive actinide element with atomic number 103, used primarily for scientific research in nuclear chemistry and physics.
-
B.
einsteinium
Einsteinium is a synthetic, highly radioactive actinide element named after Albert Einstein and used mainly for scientific research.
-
C.
mendelevium
Mendelevium is a synthetic, radioactive actinide element with atomic number 101, named after Dmitri Mendeleev and produced only in particle accelerators.
-
D.
seaborgium
Seaborgium is a synthetic, highly radioactive transition metal and transactinide element with the symbol Sg and atomic number 106.
-
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 (53)
| Predicate | Object |
|---|---|
| instanceOf |
f-block elements
ⓘ
rare-earth elements ⓘ series of chemical elements ⓘ |
| chemicallySimilarTo |
actinides
ⓘ
each other ⓘ |
| classifiedAs | inner transition metals ⓘ |
| endsWithElement | lutetium ⓘ |
| hasAtomicNumberRange | 57–71 ⓘ |
| hasCharacteristic |
exhibit lanthanide contraction
ⓘ
form colored ions ⓘ form trivalent cations ⓘ high magnetic moments in some elements ⓘ high reactivity ⓘ paramagnetic behavior in many members ⓘ similar chemical properties ⓘ strongly electropositive ⓘ |
| hasCommonOxidationState | +3 ⓘ |
| hasElectronicConfigurationPattern | 4f-orbital filling ⓘ |
| hasElement |
cerium
ⓘ
dysprosium ⓘ erbium ⓘ lanthanides self-linksurface differs ⓘ
surface form:
europium
gadolinium ⓘ holmium ⓘ lanthanum ⓘ lutetium ⓘ lanthanides self-linksurface differs ⓘ
surface form:
neodymium
praseodymium ⓘ promethium ⓘ samarium ⓘ lanthanides self-linksurface differs ⓘ
surface form:
terbium
thulium ⓘ ytterbium ⓘ |
| hasEtymology | named after lanthanum, the first element in the series ⓘ |
| hasNumberOfElements | 15 ⓘ |
| hasOtherPossibleOxidationState |
+2
ⓘ
+4 ⓘ |
| hasTypicalOxidationState | +3 ⓘ |
| locatedInPeriodicTableBlock | f-block ⓘ |
| locatedInPeriodicTablePeriod | period 6 ⓘ |
| oftenGroupedWith |
scandium
ⓘ
yttrium ⓘ |
| startsWithElement | lanthanum ⓘ |
| usedIn |
battery alloys
ⓘ
catalysts in petroleum refining ⓘ electronics ⓘ high-strength neodymium-iron-boron magnets ⓘ lasers ⓘ medical imaging contrast agents ⓘ nuclear control rods ⓘ optical glasses ⓘ permanent magnets ⓘ phosphors for lighting and displays ⓘ |
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: lanthanides Description of subject: Lanthanides are a series of 15 metallic chemical elements from lanthanum to lutetium, known for their similar properties, high reactivity, and key roles in advanced technologies such as magnets, lasers, and electronics.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
neodymium
this entity surface form:
europium
this entity surface form:
terbium