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D and F Block Elements question

2001 · Q101
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D and F Block Elements question

2001 · Q101

NEETChemistryD and F Block ElementsMCQ+4 / −1
Which of the following statement is not correct?
  1. A
    La(OH)3 is less basic than Lu(OH)3.
  2. B
    In lanthanide series ionic radius of Lu+3 ion decreases.
  3. C
    La is actually an element of transition series rather lanthanides.
  4. D
    Atomic radius of Zn and Hf are same because of lanthanide contraction.
View written solutionFree

Correct answer: A

In lanthanides the basic character of hydroxides decreases as the ionic radius decreases.

La3+ ions are larger than Li3+ so it easily gives OH– ion thus La(OH)3 is more basic than Li(OH)3.

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