Identify the rare earth element from the following.

  • A
    $Sm$
  • B
    $Hg$
  • C
    $Zn$
  • D
    $W$

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The correct basicity order of the following lanthanide ions is

Which of the following ions is the strongest oxidizing agent? [ Atomic Number of $Ce = 58, Eu = 63, Tb = 65, Lu = 71$ ]

The $f$ orbitals are half-filled and completely filled,respectively,in which of the following lanthanide ions?
(Given: Atomic numbers: $Eu=63, Sm=62, Tm=69, Tb=65, Yb=70, Dy=66$)

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$Ce$ $(Z=58)$ is a member of

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