So far our everyday general knowledge of gases, liquids and solids has provided us with sufficient background for our discussion. Now we have reached the point where we need to concern ourselves with the internal structure of matter. We shall start with atoms and see how differences in atomic structure lead to the various chemical elements such as hydrogen, carbon, oxygen, and so on.
KeywordsIonisation Energy Atomic Number Outer Electron Atomic Mass Unit Avogadro Constant
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