+The **atomic number** (Z) uniquely identifies a chemical [element](/wiki/element) by representing the number of [proton](/wiki/proton)s found in the nucleus of every atom of that element. This fundamental count dictates an element's position on the periodic table and largely determines its chemical behavior.
+## See also
+- [Mass Number](/wiki/mass_number)
+- [Isotope](/wiki/isotope)
+- [Periodic Table](/wiki/periodic_table)
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