The observed electronic configuration of copper is :(a) [Ar]18 3d9 4s2 – InterviewSolution

1.	The observed electronic configuration of copper is :(a) [Ar]18 3d9 4s2 (b) [Kr] 3d10 4s1 (c) [Kr] 3d9 4s2 (d) [Ar] 3d10 4s1
Answer» Option : (d) [Ar] 3d¹⁰ 4s¹

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