@prefix nalt: <https://lod.nal.usda.gov/nalt/> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix dc: <http://purl.org/dc/terms/> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix ns0: <https://lod.nal.usda.gov/naltv#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

nalt:267_def
  rdf:value "Formas diferentes de un único elemento que tienen el mismo número de protones pero diferente cantidad de neutrones en su núcleo. Algunos isótopos radioactivos son inestables y desprenden partículas nucleares con el tiempo hasta que se vuelven estables. Por ejemplo, los isótopos inestables del uranio se reducen para convertirse en plomo."@es, "Different forms of a single element that have the same number of protons but different numbers of neutrons in their nuclei. Some radioactive isotopes are unstable and shed nuclear particles over time until they become stable. For instance, unstable isotopes of uranium break down to become lead."@en ;
  dc:source "Geologic Glossary, U.S. Geological Survey" ;
  a <https://lod.nal.usda.gov/naltv#Definition> .

<https://lod.nal.usda.gov/naltv#Chemical>
  rdfs:label "Chemical"@en ;
  a owl:Class .

<https://lod.nal.usda.gov/nalt-core>
  rdfs:label "NALT Core"@es, "NALT Core"@en ;
  a skos:ConceptScheme .

nalt:264
  skos:prefLabel "elementos químicos"@es, "chemical elements"@en ;
  a <https://lod.nal.usda.gov/naltv#Chemical>, skos:Concept ;
  skos:narrower nalt:267 .

nalt:47902
  skos:prefLabel "marcaje isotópico"@es, "isotope labeling"@en ;
  a <https://lod.nal.usda.gov/naltv#Topic>, skos:Concept ;
  skos:related nalt:267 .

nalt:267
  skos:related nalt:47902, nalt:239 ;
  skos:definition nalt:267_def ;
  skos:exactMatch <http://id.loc.gov/authorities/subjects/sh00006433>, <http://id.cabi.org/cabt/62087>, <http://id.agrisemantics.org/gacs/C2391>, <http://id.loc.gov/authorities/subjects/sh85068681>, <http://aims.fao.org/aos/agrovoc/c_11852> ;
  skos:prefLabel "isotopes"@en, "isótopos"@es ;
  ns0:marc001 "19840" ;
  skos:broader nalt:264 ;
  a skos:Concept, ns0:Chemical ;
  skos:inScheme <https://lod.nal.usda.gov/nalt>, <https://lod.nal.usda.gov/nalt-core> ;
  dc:created "2006-01-19"^^xsd:date ;
  dc:modified "2019-09-03"^^xsd:date ;
  skos:hiddenLabel "isotope"@en ;
  skos:narrower nalt:47905 .

nalt:47905
  skos:prefLabel "isótopos estables"@es, "stable isotopes"@en ;
  a ns0:Chemical, skos:Concept ;
  skos:broader nalt:267 .

nalt:239
  skos:prefLabel "nucleidos"@es, "nuclides"@en ;
  a ns0:Chemical, skos:Concept ;
  skos:related nalt:267 .