Thompson: plum pudding, early model, atoms were postive all over with negative charges stuck within it like fruits in a pudding, Bohr: recent model, atoms had a positive nucleus, electrons orbitted around the nucleus,

لوحة الصدارة

النمط البصري

الخيارات

تبديل القالب

استعادة الحفظ التلقائي: ؟