Mass number (A)
质量数 (A)
Explanation (EN)
The total number of nucleons (protons plus neutrons) in an atom.
Explanation (ZH)
原子中核子(质子加中子)的总数。
About the IPA
The International Phonetic Alphabet is a standardized system of symbols used to represent the sounds of spoken language.
It helps linguists, language learners, and educators accurately describe pronunciation across languages.
Example: the word "hello" in British English is transcribed as /həˈləʊ/ in IPA.