Write electronic configuration of cr and cu

Er Chandra Bhushan
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Write the electronic configuration of Cr and Cu and state the cause of their abnormalityWrite electronic configuration of cr and cu

write the electronic configuration of cr (z=24) and cu (z=29)
 In case of Cr= [Ar]4s^2 3d^4 is wrong because it not in stability but it is possible to in stability

stability means any element have electronic configuration is  half-filled or Full-filled in the orbital diagram then it is more stable

 electronic configuration of Cr=[Ar]4s^1 3d^5

Or, Cr=1s^2 2s^2 2p^6 3s^2 3p^6 4s^1 3d^5

in this case we remove one electron in the 's' subshell and gives 'd' subshell.

  • 's' subshell half-filled shown in figure.
  • 'd' subshell half-filled shown in figure 
Again, In case of Cu= [Ar]4s^2 3d^9 is wrong because it not in stability but it is possible to in stability

electronic configuration of Cu=[Ar]4s^1 3d^10

Or, Cu=1s^2 2s^2 2p^6 3s^2 3p^6 4s^1 3d^10

in this case we remove one electron in the 's' subshell and gives 'd' subshell.

  • 's' subshell half-filled shown in figure.
  • 'd' subshell full-filled shown in figure

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