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What Is the Correct Electron Configuration of Copper

Question 22

Multiple Choice

What is the correct electron configuration of copper?

A) 1s²2s²2p⁶3s²3p⁶4s¹3d¹⁰
B) 1s²2s²2p⁶3s¹3p⁶4s²3d⁹
C) 1s²2s²2p⁶3s²3p⁶3d¹⁰4s¹
D) 1s²2s²2p⁶3s²3p⁶3d⁹4s²

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