+An **electron shell** is a fundamental energy level surrounding an [Atom](/wiki/atom)'s nucleus where [Electrons](/wiki/electron) reside. Each shell holds a specific number of electrons, dictating an atom's stability and its capacity for [Chemical Reactions](/wiki/chemical_reaction). These nested layers are key to an element's unique properties.
+## See also
+- [Valence Electron](/wiki/valence_electron)
+- [Electron Configuration](/wiki/electron_configuration)
+- [Orbital](/wiki/orbital)
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