Gadolinium belongs to 4f series. It's atomic number is 64. Which ot the following is the correct electronic configuration of gadolinium ?

  • Option 1)

    [Xe] 4f86d2

  • Option 2)

    [Xe] 4f9s1

  • Option 3)

    [Xe] 4f75d16s2

  • Option 4)

    [Xe] 4f65d26s2

 

Answers (1)
V Vakul

As we discussed in the concept ID

Electronic configuration -

The lanthanoid follow the  4f1-14  5d0-1  6s2  configuration (common configuration)with some exception due to full filled half filled electronic configuration.

 

- wherein

eg\rightarrow 4f^{1}5d^{1}6s^{2}

 

 Electronic configuration of Godolinium is

[Xe]4f^{7} 5d^{1}6S^{2}

 


Option 1)

[Xe] 4f86d2

This is incorrect

Option 2)

[Xe] 4f9s1

This option is incorrect

Option 3)

[Xe] 4f75d16s2

This option is correct

Option 4)

[Xe] 4f65d26s2

This option is incorrect

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