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Periodic Table and Periodicity · 2020 · 9 Jan · Shift 1

3 Chemistry questions from this JEE Main paper
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Periodic Table and Periodicity · 2020 · 9 Jan · Shift 1

3 Chemistry questions from this JEE Main paper

  1. Q9.The electronic configurations of bivalent europium and trivalent cerium are (atomic number : Xe = 54, Ce = 58, Eu = 63)
    Chemistry · Periodic Table and Periodicity · MCQ
  2. Q21.The acidic, basic and amphoteric oxides, respectively, are :
    Chemistry · Periodic Table and Periodicity · MCQ
  3. Q22.B has a smaller first ionization enthalpy than Be. Consider the following statements : (I) It is easier to remove 2p electron than 2s electron (II) 2p electron of B is more shielded from the nucleus by the inner core of electrons than the…
    Chemistry · Periodic Table and Periodicity · MCQ