+An **energy level** is a specific, discrete amount of [Energy](/wiki/energy) that a particle, such as an [Electron](/wiki/electron) within an atom, can possess. Like steps on a ladder, these levels define the stable states where particles reside, dictating how they interact with light.
+## See also
+- [Atom](/wiki/atom)
+- [Photon](/wiki/photon)
+- [Quantum Mechanics](/wiki/quantum_mechanics)