Soddy–Fajans rule
E734965
The Soddy–Fajans rule is a principle in nuclear chemistry that predicts how the emission of alpha or beta particles changes one element into another by altering its position in the periodic table.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Soddy–Fajans rule canonical | 2 |
| Soddy decay chains | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T8453084 — 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: Soddy–Fajans rule Context triple: [Frederick Soddy, knownFor, Soddy–Fajans rule]
-
A.
Goldschmidt
Goldschmidt is a common Ashkenazi Jewish surname of German origin, historically associated with the goldsmith trade.
-
B.
Sievers' law
Sievers' law is a historical phonological rule in Indo-European linguistics that explains the alternation between consonantal and vocalic forms of certain sounds (notably *y and *w) depending on the weight of the preceding syllable.
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C.
Mulliken
Mulliken is a surname most notably associated with Robert S. Mulliken, the American physicist and chemist who won the Nobel Prize for his work on molecular orbital theory.
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D.
Lenzsche Regel
Lenzsche Regel ist ein grundlegendes Gesetz der Elektrodynamik, das die Richtung induzierter Ströme so festlegt, dass sie der Ursache ihrer Entstehung entgegenwirken.
-
E.
Kohlrausch
Kohlrausch is a German surname most notably associated with physicist Friedrich Kohlrausch, known for his pioneering work in electrical conductivity and physical 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: Soddy–Fajans rule Target entity description: The Soddy–Fajans rule is a principle in nuclear chemistry that predicts how the emission of alpha or beta particles changes one element into another by altering its position in the periodic table.
-
A.
Goldschmidt
Goldschmidt is a common Ashkenazi Jewish surname of German origin, historically associated with the goldsmith trade.
-
B.
Sievers' law
Sievers' law is a historical phonological rule in Indo-European linguistics that explains the alternation between consonantal and vocalic forms of certain sounds (notably *y and *w) depending on the weight of the preceding syllable.
-
C.
Mulliken
Mulliken is a surname most notably associated with Robert S. Mulliken, the American physicist and chemist who won the Nobel Prize for his work on molecular orbital theory.
-
D.
Lenzsche Regel
Lenzsche Regel ist ein grundlegendes Gesetz der Elektrodynamik, das die Richtung induzierter Ströme so festlegt, dass sie der Ursache ihrer Entstehung entgegenwirken.
-
E.
Kohlrausch
Kohlrausch is a German surname most notably associated with physicist Friedrich Kohlrausch, known for his pioneering work in electrical conductivity and physical chemistry.
- F. None of above. chosen
Statements (42)
| Predicate | Object |
|---|---|
| instanceOf |
radioactivity rule
ⓘ
rule in nuclear chemistry ⓘ |
| appliesTo |
alpha decay
ⓘ
beta minus decay ⓘ beta plus decay ⓘ electron capture ⓘ |
| category |
Nuclear chemistry
ⓘ
Nuclear physics principles ⓘ Radioactivity ⓘ |
| concerns |
atomic number
ⓘ
mass number ⓘ position in periodic table ⓘ |
| describes |
change of atomic number during radioactive decay
ⓘ
change of chemical element during radioactive decay ⓘ |
| field |
nuclear chemistry
ⓘ
nuclear physics ⓘ radiochemistry ⓘ |
| historicalContext | formulated in early 20th century ⓘ |
| namedAfter |
Frederick Soddy
ⓘ
Kazimierz Fajans ⓘ |
| predicts |
change of element identity after alpha decay
ⓘ
change of element identity after beta decay ⓘ movement of nuclides in the periodic table after decay ⓘ |
| relatedConcept |
isobars
ⓘ
isotopes ⓘ nuclear decay ⓘ nuclear stability ⓘ nuclide chart ⓘ radioactivity ⓘ |
| relatesTo |
nuclear transmutation
ⓘ
radioactive series ⓘ transmutation of elements ⓘ |
| states |
alpha decay decreases atomic number by 2
ⓘ
alpha decay decreases mass number by 4 ⓘ beta minus decay increases atomic number by 1 ⓘ beta minus decay leaves mass number unchanged ⓘ beta plus decay decreases atomic number by 1 ⓘ beta plus decay leaves mass number unchanged ⓘ electron capture decreases atomic number by 1 ⓘ electron capture leaves mass number unchanged ⓘ |
| usedFor |
interpreting decay chains
ⓘ
predicting daughter nuclide from parent nuclide ⓘ |
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: Soddy–Fajans rule Description of subject: The Soddy–Fajans rule is a principle in nuclear chemistry that predicts how the emission of alpha or beta particles changes one element into another by altering its position in the periodic table.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.