seaborgium
E107572
Seaborgium is a synthetic, highly radioactive transition metal and transactinide element with the symbol Sg and atomic number 106.
All labels observed (2)
| Label | Occurrences |
|---|---|
| seaborgium canonical | 5 |
| unnilhexium | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T854046 — 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: seaborgium Context triple: [Glenn T. Seaborg, hasEponym, seaborgium]
-
A.
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.
-
B.
mendelevium
Mendelevium is a synthetic, radioactive actinide element with atomic number 101, named after Dmitri Mendeleev and produced only in particle accelerators.
-
C.
einsteinium
Einsteinium is a synthetic, highly radioactive actinide element named after Albert Einstein and used mainly for scientific research.
-
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.
lawrencium
Lawrencium is a synthetic, highly radioactive actinide element with atomic number 103, used primarily for scientific research in nuclear chemistry and physics.
- 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: seaborgium Target entity description: Seaborgium is a synthetic, highly radioactive transition metal and transactinide element with the symbol Sg and atomic number 106.
-
A.
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.
-
B.
mendelevium
Mendelevium is a synthetic, radioactive actinide element with atomic number 101, named after Dmitri Mendeleev and produced only in particle accelerators.
-
C.
einsteinium
Einsteinium is a synthetic, highly radioactive actinide element named after Albert Einstein and used mainly for scientific research.
-
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.
lawrencium
Lawrencium is a synthetic, highly radioactive actinide element with atomic number 103, used primarily for scientific research in nuclear chemistry and physics.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
chemical element
ⓘ
synthetic element ⓘ transactinide element ⓘ transition metal ⓘ |
| appearance | unknown (no macroscopic samples) ⓘ |
| atomicNumber | 106 ⓘ |
| atomicWeight | [269] ⓘ |
| belongsToGroup | chromium group ⓘ |
| belongsToSeries |
6d transition metals
ⓘ
transactinides ⓘ |
| block | d-block ⓘ |
| CASNumber | 54038-81-2 ⓘ |
| chemicalSymbol | Sg ⓘ |
| controversy | discovery credit dispute between Berkeley and Dubna teams ⓘ |
| discoveredAt |
Joint Institute for Nuclear Research
ⓘ
Lawrence Berkeley National Laboratory ⓘ |
| discoverer |
Albert Ghiorso
ⓘ
American–Soviet collaboration ⓘ |
| discoveryYear | 1974 ⓘ |
| electronConfiguration | [Rn] 5f14 6d4 7s2 (predicted) ⓘ |
| elementCategory | transition metal ⓘ |
| elementInPeriodicTable | yes ⓘ |
| formerProposedName |
unnilhexium
ⓘ
linked to:
seaborgium
|
| formerSystematicSymbol | Unh ⓘ |
| group | 6 ⓘ |
| isotopesCountObserved | a few isotopes observed ⓘ |
| IUPACApprovalYear | 1997 ⓘ |
| IUPACName | seaborgium ⓘ |
| mostStableIsotope | seaborgium-269 ⓘ |
| mostStableIsotopeHalfLife | approximately 3.1 minutes ⓘ |
| namedAfter | Glenn T. Seaborg ⓘ |
| naturalOccurrence |
does not occur naturally
ⓘ
produced artificially ⓘ |
| neutronNumberMostStableIsotope | 163 ⓘ |
| nuclearCharge | +106 ⓘ |
| oxidationState |
+3
ⓘ
+4 ⓘ +5 ⓘ +6 ⓘ |
| period | 7 ⓘ |
| predictedChemistry |
similar to molybdenum
ⓘ
similar to tungsten ⓘ |
| primaryUse | scientific research ⓘ |
| productionMethod | heavy-ion nuclear reactions ⓘ |
| protonCount | 106 ⓘ |
| radioactivity | highly radioactive ⓘ |
| standardState | solid (predicted) ⓘ |
| uses | no significant commercial applications ⓘ |
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: seaborgium Description of subject: Seaborgium is a synthetic, highly radioactive transition metal and transactinide element with the symbol Sg and atomic number 106.
Referenced by (7)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: seaborgium
linked to: seaborgium
subject linked to:
FLNR (Flerov Laboratory of Nuclear Reactions)