isotope

noun

/ˈaɪsətəʊp/

(physics物理, chemistry化学)

词汇	isotope
释义	isotope noun /ˈaɪsətəʊp/ /ˈaɪsətəʊp/ (physics物理, chemistry化学) one of two or more forms of a chemical element that have the same number of protons but a different number of neutrons in their atoms. They have different physical properties (= characteristics) but the same chemical ones.同位素 radioactive isotopes放射性同位素 the many isotopes of carbon碳的诸多同位素 Topics Physics and chemistryc2 Collocations DictionaryIsotope is used after these nouns: carbon 词源1913: coined by F. Soddy, from iso- ‘equal’ + Greek topos ‘place’ (because the isotopes occupy the same place in the periodic table of elements).
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