Explore: Atomic Energy Levels

rotational energy levels in molecules. The energy spectrum of a system with such discrete energy levels is said to be quantized. In chemistry and atomic physics

form of electromagnetic waves representing the changes in energy between atomic energy levels. When elements are burned by a flame, they emit electromagnetic

is the spin–orbit interaction leading to shifts in an electron's atomic energy levels, due to electromagnetic interaction between the electron's magnetic

change in eigenvalues; several distinct energy levels emerge in place of the former degenerate (multi-state) level. This may occur because of external fields

xenon. Bound quantum states have discrete energy levels. When applied to atomic orbitals, this means that the energy differences between states are also discrete

the atoms' atomic orbitals overlap with the nearby orbitals. Each discrete energy level splits into N levels, each with a different energy. Since the

atomic physics, and chemistry, whereas in nuclear physics the term separation energy is used. A bound system is typically at a lower energy level than

physical processes, in particular including some transitions between atomic energy levels, occur at exceedingly stable frequency; counting cycles of such a

National Bureau of Standards (NBS) in 1945. Her tables of atomic spectra and energy levels, published by NBS, have remained essential references in spectroscopy

Space-Distribution of X-ray Photoelectrons Ejected from the K and L Atomic Energy-Levels  (1930) Doctoral advisor Robert Millikan Doctoral students Seth Neddermeyer