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The d & f Block Elements — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistryThe d & f Block Elements1 Mark
MCQ
Which of the following has smallest ionic radius ?
  • A
    $Nd^{3+}$
  • B
    $Dy^{3+}$
  • ✓
    $Lu^{3+}$
  • D
    $Pm^{3+}$
✓

Answer

Correct option: C.
$Lu^{3+}$
As we move from left to right in a raw, radii decreases.
So radii of $Lu^{+3}$ is smallest among all.

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