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Give two consequences of lanthanoid cont...

Give two consequences of lanthanoid contraction.

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Due to lanthanide contraction:
(i) Similarity in atomic sizes of elements of second and third transition series.
(ii) The separation of lanthanides in pure state become difficult.
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Knowledge Check

  • Reason of lanthanoid contraction is:

    A
    Negligible screening effect of ‘f’-orbitals
    B
    Increasing nuclear charge
    C
    Decreasing nuclear charge
    D
    Decreasing screening effect

  • The lanthanoid contraction refers to :

    A
    valence electrons of the lanthanoid series
    B
    ionic radius of the series
    C
    the density of the series
    D
    nuclear mass of the series.

  • The lanthanoid contraction relates to :

    A
    valence electrons
    B
    densities
    C
    nuclear masses
    D
    ionic radii

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