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the correct electronic configuration of ...

the correct electronic configuration of `Cu^(2+)` ion is

A

`[Ar] (3d)^8(4s)^1`

B

`[Ar] (3d)^7(4s)^2`

C

`[Ar] (3d)^9(4s)^0`

D

`[Ar] (3d)^10(4s)^0`

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The correct Answer is:
C
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