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f-Block Elements

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  1. 1.

    Lanthanoid contraction is caused by:

  2. 2.

    Ce shows +4 oxidation state because Ce^4+ achieves:

  3. 3.

    Eu^2+ is stable because Eu^2+ has:

  4. 4.

    The modern method for separating lanthanoids is:

  5. 5.

    The dominant oxidation state of lanthanoids is:

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