Electronic configuration of copper is 3d^(10)4s^(1) instead of 3d^(9) – InterviewSolution

1.	Electronic configuration of copper is 3d^(10)4s^(1) instead of 3d^(9) 4s^(1).Why?
Answer» Solution :The configuration of COPPER is `3d^(10) 4S^(1)` due to the extra stbility of `d^(10)`SYSTEM in which all 10 electrons are completely paired and 3d-subshell in completely filled.

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