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NAL Agricultural Thesaurus
U.S. Department of Agriculture
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Concept Breadcrumbs

Research, Technology, Methods > research > animal research > chemical substances > chemical elements > isotopes
Preferred Term:

isotopes

Definition:
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.
Concept Schemes:
NALT Full
https://lod.nal.usda.gov/nalt-core
Broader Concept:
chemical elements
Narrower Concepts:
Related Concepts:
URI:
https://lod.nal.usda.gov/nalt/267
Download this Concept:
RDF/XMLCreated 2006-01-19, last modified 2019-09-03
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