Select the electron configurations for [Ar]3 d 5 [Ar]3 d 6 [Ar]3 d 7 [Ar]4 s 1 3

Question

Select the electron configurations for

[Ar]3d5

[Ar]3d6

[Ar]3d7

[Ar]4s13d5

[Ar]4s13d6

[Ar]4s13d7

[Ar]4s23d4

[Ar]4s23d5

[Ar]4s23d6

[Ar]3d8

[Ar]3d9

[Ar]3d10

[Ar]4s13d8

[Ar]4s13d9

[Ar]4s13d10

[Ar]4s23d8

[Ar]4s23d9

[Ar]4s23d10

[Kr]4d8

[Kr]4d9

[Kr]4d10

[Kr]5s14d8

[Kr]5s14d9

[Kr]5s14d10

[Kr]5s24d8

[Kr]5s24d9

[Kr]5s24d10

(a) Co3+   

[Ar]3d5

  

[Ar]3d6

  

[Ar]3d7

  

[Ar]4s13d5

  

[Ar]4s13d6

  

[Ar]4s13d7

  

[Ar]4s23d4

  

[Ar]4s23d5

  

[Ar]4s23d6

(b) Cu2+   

[Ar]3d8

  

[Ar]3d9

  

[Ar]3d10

  

[Ar]4s13d8

  

[Ar]4s13d9

  

[Ar]4s13d10

  

[Ar]4s23d8

  

[Ar]4s23d9

  

[Ar]4s23d10

(c) Ag+   

[Kr]4d8

  

[Kr]4d9

  

[Kr]4d10

  

[Kr]5s14d8

  

[Kr]5s14d9

  

[Kr]5s14d10

  

[Kr]5s24d8

  

[Kr]5s24d9

  

[Kr]5s24d10

Explanation / Answer

(a) Co+3 electron configuration is: [Ar]3d6

(b) Cu+2 electron configuration is: [Ar]3d9

(c) Ag+ electron configuration is: [Kr]4d10

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