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Question

Correcstatement is:

  1. K=4s1,Cr=3d44s2,Cu=3d104s2    
  2. K=4s2,Cr=3d44s2,Cu=3d104s2    
  3. K=4s,Cr=3d 4s,Cu=3d 4s    
  4. K=4s1,Cr=3d54s1,Cu=3d104s1    

The correct answer is: K=4s1,Cr=3d54s1,Cu=3d104s1

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