Aufbau principle


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Aufbau principle

[′au̇f‚bau̇ ¦prin·sə·pəl]
(chemistry)
A description of the building up of the elements in which the structure of each in sequence is obtained by simultaneously adding one positive charge (proton) to the nucleus of the atom and one negative charge (electron) to an atomic orbital.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
In modern structural chemistry [1], the Aufbau principle for atomic periodicity [2], Huckel molecular orbital theory [3], reinforced by Hartree-Fock theory [4, 5] and then completed by the density functional theory (DFT) [6-12], are all cornerstones in modeling and predict physical behavior of many electronic systems, from atoms to molecules and solid states.
(iv) variationally extending KT to restricted open-sells canonical orbitals which nevertheless overestimate the Aufbau principle [48];