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The electronic configuration of Cu is...

The electronic configuration of Cu is

A

`[Ne] 3s^2 3p^6 3d^9 4s^2`

B

`[Ne] 3s^2 3p^6 3d^10 4s^1`

C

`[Ne] 3s^2 3p^6 3d^3 4s^2 4p^6`

D

`[Ne] 3s^2 3p^6 3d^5 4s^2 4p^4`

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The correct Answer is:
B
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