+Electron Affinity is the measure of energy released when an electron is added to a neutral [Atom](/wiki/atom) in the gaseous state, forming a negative [Ion](/wiki/ion). A high electron affinity indicates a strong attraction for an additional electron.
+## See also
+- [Ionization Energy](/wiki/ionization_energy)
+- [Electronegativity](/wiki/electronegativity)
+- [Periodic Table](/wiki/periodic_table)
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