Electron energy levels

Electron energy levels are specific, quantized states within an atom where electrons can exist. Think of them as "rungs" on a ladder; electrons can occupy these levels, but not the spaces between. When an electron absorbs energy, it moves to a higher energy level; releasing energy, it falls back down, often emitting light. These levels are determined by the atom’s structure and dictate how atoms interact, bond, or emit light. The concept helps explain atomic behavior, spectral lines, and chemical reactions in a precise, yet accessible way.