positive (+), negative (-), no charge (º), 1 atomic mass unit, 1 amu, very small (1/1834 of 1 amu), nucleus with protons, nucleus with neutrons, electron cloud, atomic number, = # of protons in a neutral atom, = mass number - atomic number.

Parts of the Atom

排行榜

視覺風格

選項

切換範本

恢復自動保存: ?