actinide series
E264133
The actinide series is a group of 15 radioactive metallic elements with atomic numbers 89 through 103, known for their f-block electron configurations and significant roles in nuclear energy and weaponry.
All labels observed (1)
| Label | Occurrences |
|---|---|
| actinide series canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T2390428 — 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: actinide series Context triple: [lawrencium, belongsToSeries, actinide series]
-
A.
lanthanides
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.
-
B.
einsteinium
Einsteinium is a synthetic, highly radioactive actinide element named after Albert Einstein and used mainly for scientific research.
-
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.
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.
-
E.
Fermium
Fermium is a synthetic, highly radioactive actinide metal with atomic number 100, first identified in the debris of the first hydrogen bomb test and named in honor of physicist Enrico Fermi.
- 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: actinide series Target entity description: The actinide series is a group of 15 radioactive metallic elements with atomic numbers 89 through 103, known for their f-block electron configurations and significant roles in nuclear energy and weaponry.
-
A.
lanthanides
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.
-
B.
einsteinium
Einsteinium is a synthetic, highly radioactive actinide element named after Albert Einstein and used mainly for scientific research.
-
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.
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.
-
E.
Fermium
Fermium is a synthetic, highly radioactive actinide metal with atomic number 100, first identified in the debris of the first hydrogen bomb test and named in honor of physicist Enrico Fermi.
- F. None of above. chosen
Statements (58)
| Predicate | Object |
|---|---|
| instanceOf |
f-block element series
ⓘ
inner transition metal series ⓘ series of chemical elements ⓘ |
| containsNaturallyOccurringElements |
actinium
ⓘ
protactinium ⓘ thorium ⓘ uranium ⓘ |
| containsPrimarilySyntheticElements |
americium
ⓘ
berkelium ⓘ californium ⓘ curium ⓘ einsteinium ⓘ fermium ⓘ lawrencium ⓘ mendelevium ⓘ neptunium ⓘ nobelium ⓘ plutonium ⓘ |
| endsWithAtomicNumber | 103 ⓘ |
| hasBlock | f-block ⓘ |
| hasCharacteristic |
complex chemistry due to 5f orbitals
ⓘ
highly radioactive ⓘ mostly unstable isotopes ⓘ |
| hasChemicalSymbolRange | Ac–Lr ⓘ |
| hasElement |
actinium
ⓘ
americium ⓘ berkelium ⓘ californium ⓘ curium ⓘ einsteinium ⓘ fermium ⓘ lawrencium ⓘ mendelevium ⓘ neptunium ⓘ nobelium ⓘ plutonium ⓘ protactinium ⓘ thorium ⓘ uranium ⓘ |
| hasGeneralElectronConfiguration | [Rn] 5f^0–14 6d^0–2 7s^2 ⓘ |
| hasKeyApplication |
neutron sources
ⓘ
nuclear energy ⓘ nuclear medicine ⓘ nuclear weapons ⓘ radioisotope thermoelectric generators ⓘ |
| hasMetallicCharacter | metallic ⓘ |
| hasNumberOfElements | 15 ⓘ |
| hasPeriodRange | period 7 ⓘ |
| hasTypicalOxidationStates |
+2
ⓘ
+3 ⓘ +4 ⓘ +5 ⓘ +6 ⓘ |
| isInnerTransitionMetalSeries | true ⓘ |
| isLocatedBelow | lanthanide series ⓘ |
| isNamedAfter | actinium ⓘ |
| isRadioactive | true ⓘ |
| startsWithAtomicNumber | 89 ⓘ |
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: actinide series Description of subject: The actinide series is a group of 15 radioactive metallic elements with atomic numbers 89 through 103, known for their f-block electron configurations and significant roles in nuclear energy and weaponry.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.