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Atomic nummer

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An explanation o the superscripts an subscripts seen in atomic nummer notation. Atomic nummer is the nummer o protons, an tharefore the tot positive charge, in the atomic nucleus.

In chemistry an physics, the atomic nummer (cried the proton nummer an aa) is the number o protons foond in the nucleus o an atom an tharefore identical tae the charge nummer o the nucleus. It is conventionally representit bi the seembol Z. The atomic nummer uniquely identifies a chemical element. In an atom o neutral charge, the atomic nummer is equal tae the nummer o electrons.