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electronic configuration
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A diagram showing atomic energy levels and electron orbitals, with labeled boxes for s, p, d, and f orbitals from levels 1 to 7, and arrows indicating the order of electron filling. Some higher orbitals are shaded to show they are not occupied by ground-state electrons.
Understanding the arrangement of electrons in atoms
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Italian-born physicist Dr. Enrico Fermi draws a diagram at a blackboard with mathematical equations. circa 1950.
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Italian physicist Guglielmo Marconi at work in the wireless room of his yacht Electra, c. 1920.
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electronic configuration: References & Edit History

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Article History

Type Description Contributor Date
Modified link of Web site: Chemistry LibreTexts - Electron Configuration. Nov 01, 2026
Add new Web site: Khan Academy - Electron configurations article. Jun 17, 2026
Add new Web site: ACS Publication - Journal of Chemical Theory and Computation - Varying Electronic Configurations in Compressed Atoms: From the Role of the Spatial Extension of Atomic Orbitals to the Change of Electronic Configuration as an Isobaric ... Sep 06, 2025
Add new Web site: CiteSeerX - The electronic configuration of Fe in Ξ²-FeSi2 (PDF). Mar 22, 2025
Add new Web site: Brigham Young University - General College Chemistry - Electron Configurations. Feb 10, 2025
Add new Web site: National Center for Biotechnology Information - PubMed Central - Electron configuration-based neural network model to predict physicochemical properties of inorganic compounds. Nov 15, 2024
Add new Web site: International Journal of Science and Research - Conceptual Understanding of Students on Electron Configuration. Sep 20, 2024
Add new Web site: Purdue University - College of Science - Chemical Education Division Groups - Quantum Numbers and Electron Configurations. Jun 03, 2024
Add new Web site: Khan Academy - Electron configurations with the periodic table. Feb 29, 2024
Add new Web site: UEN Digital Press with Pressbooks - Electron Configuration. Dec 15, 2023
Add new Web site: Lake Washington Institute of Technology - Electronic Structure of Atoms. Sep 08, 2023
Add new Web site: OpenStax - Chemistry 2e - Electronic Structure of Atoms (Electron Configurations). Jul 11, 2023
Add new Web site: Florida State University - Chemistry and Biochemistry - Electron Configurations. May 06, 2023
Add new Web site: Chemistry LibreTexts - Electron Configuration. Sep 30, 2022
Article revised and updated. Jul 21, 2022
Add new Web site: ThinkQuest - Electron Configuration. Sep 07, 2011
Article added to new online database. Jul 20, 1998
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