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D and F Block Elements · 2022 · 28 Jul · Shift 2

1 Chemistry questions from this JEE Main paper
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D and F Block Elements · 2022 · 28 Jul · Shift 2

1 Chemistry questions from this JEE Main paper

  1. Q3.Which of the following pair is not isoelectronic species? (At. no. Sm, 62; Er, 68; Yb, 70; Lu, 71; Eu, 63; Tb, 65; Tm, 69)
    Chemistry · D and F Block Elements · Multiple correct