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AP EAMCET202123 Aug 2021Morning ShiftChemistryd and f Block ElementsActual

Gadolinium (atomic number =64 ) is a member of 4 f series. It's electronic configuration in +3 oxidation state is [Xe] 4 f^7 . What is the ground state electronic configuration of gadolinium?

Options

  1. A[ Xe ] 4 f¹⁰
  2. B[ Xe ] 4 f^8 6 s^2
  3. C[ Xe ] 4 f^7 5 d^3
  4. D[ Xe ] 4 f^7 5 d^1 6 s^2

Correct answer

D. [ Xe ] 4 f^7 5 d^1 6 s^2

Step-by-step solution

The atomic number of gadolinium is 64 . Electronic configuration is [Xe] 4 f^7 5 d^1 6 s^2 Gd ³⁺=[ Xe ] 4 f^7 5 d^0 6 s^0

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