Electron configuration
OverviewShells and subshellsNotationEnergy of ground state and excited statesHistoryAtoms: Aufbau principle and Madelung ruleOpen and closed shellsNoble gas configuration
In atomic physics and quantum chemistry, the electron configuration is the distribution of electrons of an atom or molecule (or other physical structure) in atomic or molecular orbitals. For example, the electron configuration of the neon atom is 1s 2s 2p, meaning that the 1s, 2s, and 2p subshells are occupied by two, two, and six electrons, respectively.










