Question

electronic configuration of Cu​

Answer 1

Answer:

1s^2) (2s^2 2p^6) (3s^2 3p^6 3d^10) (4s^1) or

[Ar] 3d¹⁰ 4s¹.

Explanation:

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Answer 2

Answer:

29 Cu = $1s {}^{2} \: 2s {}^{2} \: 2p {}^{6} \: 3s {}^{2} \: 3p {}^{6} \:4s {}^{1} \: 3d {}^{10}$

Explanation:

$4s {}^{1} \: comes \:before \: 3d {}^{10} \: because \: 4s {}^{1} \: has \: less \: energy \: than \: 3d {}^{10}$

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