NH (chemical symbol for nihonium)
E396096
Nihonium is a synthetic, highly radioactive superheavy chemical element with the atomic number 113, first created in particle accelerators and named after Japan.
All labels observed (1)
| Label | Occurrences |
|---|---|
| NH (chemical symbol for nihonium) canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T3868547 — 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: NH (chemical symbol for nihonium) Context triple: [NH, notToBeConfusedWith, NH (chemical symbol for nihonium)]
-
A.
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.
-
B.
element meitnerium
Meitnerium is a synthetic, highly radioactive chemical element with atomic number 109, named in honor of physicist Lise Meitner.
-
C.
Albium Ingaunum
Albium Ingaunum was an important ancient Ligurian coastal city, located in what is now Albenga on the Italian Riviera.
-
D.
seaborgium
Seaborgium is a synthetic, highly radioactive transition metal and transactinide element with the symbol Sg and atomic number 106.
-
E.
mendelevium
Mendelevium is a synthetic, radioactive actinide element with atomic number 101, named after Dmitri Mendeleev and produced only in particle accelerators.
- 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: NH (chemical symbol for nihonium) Target entity description: Nihonium is a synthetic, highly radioactive superheavy chemical element with the atomic number 113, first created in particle accelerators and named after Japan.
-
A.
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.
-
B.
element meitnerium
Meitnerium is a synthetic, highly radioactive chemical element with atomic number 109, named in honor of physicist Lise Meitner.
-
C.
Albium Ingaunum
Albium Ingaunum was an important ancient Ligurian coastal city, located in what is now Albenga on the Italian Riviera.
-
D.
seaborgium
Seaborgium is a synthetic, highly radioactive transition metal and transactinide element with the symbol Sg and atomic number 106.
-
E.
mendelevium
Mendelevium is a synthetic, radioactive actinide element with atomic number 101, named after Dmitri Mendeleev and produced only in particle accelerators.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
chemical element
ⓘ
chemical symbol ⓘ radioactive element ⓘ superheavy element ⓘ synthetic element ⓘ |
| atomicNumber | 113 ⓘ |
| belongsToSeries |
superheavy elements
ⓘ
transactinide elements ⓘ |
| block | p-block ⓘ |
| CASNumber | 54084-70-7 ⓘ |
| chemicalSeries | group 13 elements ⓘ |
| denotes | nihonium ⓘ |
| discoveredAt |
RIKEN
ⓘ
surface form:
RIKEN Nishina Center for Accelerator-Based Science
|
| discoveredInCountry | Japan ⓘ |
| discoverer |
RIKEN
ⓘ
surface form:
Kosuke Morita-led RIKEN team
|
| discoveryMethod | particle accelerator experiments ⓘ |
| discoveryYear | 2003 ⓘ |
| electronConfiguration | [Rn] 5f14 6d10 7s2 7p1 (predicted) ⓘ |
| elementCategory | post-transition metal ⓘ |
| group | 13 ⓘ |
| hasNoStableIsotopes | true ⓘ |
| isManMade | true ⓘ |
| IUPACGroupName | boron group (group 13) ⓘ |
| IUPACNameApproved | 2016 ⓘ |
| mostStableIsotope | nihonium-286 ⓘ |
| mostStableIsotopeHalfLife | on the order of seconds ⓘ |
| namedAfter | Japan ⓘ |
| nameOrigin | Nihon (Japanese name for Japan) ⓘ |
| neighborElementNext | flerovium ⓘ |
| neighborElementPrevious | copernicium ⓘ |
| nuclearCharge | +113e ⓘ |
| occurrence | does not occur naturally on Earth ⓘ |
| oxidationStates |
+1 (predicted)
ⓘ
+3 (predicted) ⓘ |
| period | 7 ⓘ |
| positionInPeriodicTable | between copernicium and flerovium ⓘ |
| previousSymbol | Uut ⓘ |
| previousSystematicName | ununtrium ⓘ |
| producedBy | fusion of zinc-70 and bismuth-209 nuclei ⓘ |
| productionScale | atom-at-a-time synthesis ⓘ |
| radioactiveDecayMode | alpha decay (dominant) ⓘ |
| radioactivity | highly radioactive ⓘ |
| standardAtomicWeight | [286] ⓘ |
| stateAtSTP | unknown (predicted solid) ⓘ |
| symbol | Nh ⓘ |
| Z | 113 ⓘ |
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: NH (chemical symbol for nihonium) Description of subject: Nihonium is a synthetic, highly radioactive superheavy chemical element with the atomic number 113, first created in particle accelerators and named after Japan.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.