The average weight of an atom of an element, expressed by comparison to a standard atom (formerly one of hydrogen or oxygen, now one of the isotope…
| 单词 | θ71597 |
| 释义 | the world > matter > chemistry > atomic chemistry > [noun] > atoms > atomic weight or mass (5) atomic weight1819 The average weight of an atom of an element, expressed by comparison to a standard atom (formerly one of hydrogen or oxygen, now one of the isotope… Prout's hypothesis1860 The hypothesis that the atomic weights of chemical elements are integral multiples of the atomic weight of hydrogen. atomic mass1884 The average mass of an atom of an element, expressed by comparison to a standard atom (formerly one of hydrogen or oxygen, now one of the isotope… Subcategories:— atomic mass unit (2) |
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