Copper is an exception to the standard Aufbau principle; its ground state electronic configuration involves the transfer of an electron from the 4s to the 3d orbital to achieve a more stable completely filled 3d subshell.
Which one of the following is the correct electronic configuration of copper?
Asked in UPSC Geoscientist 2023 · Topic: Atomic Structure (Electronic Configurations of Multi-electron Atoms and Ions)
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