Read Edit View history 质子数 zhìzǐshù atomic number Origin Definitions Defs Strokes Stroke Words Sentences Sents created sense approved 质子数/質子數 · zhìzǐshù · atomic number 2026/03/04 质子数 / 質子數 zhìzǐshù atomic number the number of protons found in the nucleus of every atom of a chemical element 氦原子的质子数是2。 created sense Mar 4, 2026, 02:25 AM