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| navigate by keyword : atom atomic aufbau aufbauprinzip bulding configuration electron electrons energetically energy exchange exclusion hund interaction ion level orbital pauli principle rule subshell subshells |
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| The aufbau principle, from the German Aufbauprinzip, also called the aufbau rule, states that in the ground state of an atom or ion, electrons fill subshells of the lowest available energy, then they fill subshells of higher energy. For example, the 1s subshell is filled before the 2s subshell is occupied. |
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Stockphotos.ro (c) 2025. All stock photos are provided by Dreamstime and are copyrighted by their respective owners. |
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