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D and F Block Elements question

2009 · Shift 0 · Q17
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D and F Block Elements question

2009 · Shift 0 · Q17

JEE MainChemistryD and F Block ElementsMCQ+4 / −1
Knowing that the Chemistry of lanthanoids (Ln) is dominated by its +3 oxidation state, which of the following statements is incorrect?
  1. A
    Because of the large size of the Ln (III) ions the bonding in its compounds is predominantly ionic in character.
  2. B
    The ionic sizes of Ln (III) decrease in general with increasing atomic number.
  3. C
    Ln (III) compounds are generally colourless
  4. D
    Ln (III) hydroxides are mainly basic in character.
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