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広告
Last Updated
：2025/12/08
atomic mass number
Noun
dated
Japanese Meaning
質量数、つまり原子核中の陽子と中性子の合計数。なお、“atomic mass number”は「mass number」を形式的に表現した言い方で、「A」という記号で示される場合もある。
（ plural ）
Quizzes for review
(physics, chemistry, dated) Pedantic form of mass number. Symbol: A.
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atomic mass number
The atomic mass number, traditionally denoted by A, helped chemists differentiate between isotopes in early nuclear research.
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The atomic mass number, traditionally denoted by A, helped chemists differentiate between isotopes in early nuclear research.
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