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Electron Configuration of Elements

35. Transition Metals / Electron Configuration of Elements / Problem 4

Problem 4

What electron configuration does copper have due to electron promotion?

A

[Ar] 3d¹⁰ 4s¹

B

[Ar] 3d⁹ 4s²

C

[Ar] 3d⁸ 4s²

D

[Ar] 3d¹⁰ 4s²