Gadolinium belongs to 4f series. Its atomic number is 64. Which of the – InterviewSolution

1.	Gadolinium belongs to 4f series. Its atomic number is 64. Which of the following is the correct electronic configuration of gadolinium ?
Answer» [Xe] `4F^(7) 5d^(1) 6s^(2)` [Xe] `4f^(6) 5d^(2) 6s^(2)` [Xe] `4f^(8) 6d^(2)` [Xe] `4f^(9) 5s^(1)` Solution :Gd : `[Xe]^(54) 4f^(7) 6s^(2)` because of extra stability of half filled f-subshell.

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