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Transition and Inner Transition Elements — Chemistry STD 12 — Question

Tamilnadu BoardEnglish MediumSTD 12ChemistryTransition and Inner Transition Elements1 Mark
MCQ
Which one of the following is not correct?
  • ✓
    $La ( OH )_2$ is less basic than $Lu ( OH )_3$
  • B
    In lanthanoid series ionic radius of $Ln^{3+}$ ions decreases
  • C
    La is actually an element of transition metal series rather than lanthanide series
  • D
    Atomic radii of Zr and Hf are same because of lanthanide contraction
✓

Answer

Correct option: A.
$La ( OH )_2$ is less basic than $Lu ( OH )_3$
$La ( OH )_2$ is less basic than $Lu ( OH )_3$

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