Read Edit View history 原子数 yuánzǐshù atomic number Origin Definitions Defs Strokes Stroke Words Sentences Sents Senses Add sense 原子数/ 原子數 yuánzǐshù atomic number the number of protons in the nucleus of an atom Edit Delete 原子数/ 原子數 yuánzǐshù atomicity the number of atoms in a molecule Edit Delete References Add reference No references for this word.