natural abundance
Compare with isotopic abundance .The average fraction of atoms of a given isotope of an element on Earth. | ||||
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Natural abundance Definition from Encyclopedia Dictionaries & Glossaries
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Natural abundance
In chemistry, natural abundance (NA) refers to the prevalence of isotopes of a chemical element as naturally found on a planet. The relative atomic mass (a weighted average) of these isotopes is the atomic weight listed for the element in the periodic table. The abundance of an isotope varies from planet to planet but remains relatively constant in time.
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