- the number of protons in the nucleus of an atom of an element
Abbreviation: at. no.
Symbol: Z
单词 | atomic number |
释义 | WordReference Random House Learner's Dictionary of American English © 2024 aˈtom•ic ˈnum•ber, n. [countable] WordReference Random House Unabridged Dictionary of American English © 2024
atom′ic num′ber,
Collins Concise English Dictionary © HarperCollins Publishers:: atomic number n
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