Sarah plz help me iam one of the teacher's in somalia I want to prepare master degree but I don't any money my family is poor plz my teacher Sarah help me😢
this video has the best explanation for the composition of the atom. 1. The number of Protons changes element. 2. The number of Neutrons changes Isotope. 3. The number of electron forms Ions. Why do more people not say this right away?