12th Class Chemistry The d-and f-Block Elements / d तथा f ब्लॉक के तत्व

  • question_answer 61)
        Gadolinium belongs to 4f series. Its atomic number is 64. Which of the following is the correct electronic configuration of gadolinium? (a)          (b) (c)         (d)

    Answer:

                        (a) Gadolinium belongs to 4f series and has atomic number 64. The correct electronic configuration of gadolinium is                  It has extra stability due to half-filled 4f subshell.


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