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JEE Main & Advanced JEE Main Paper (Held On 10-Jan-2019 Morning)

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    The effect of lanthanoid contraction in the lanthanoid series of elements by and large means: [JEE Main Online Paper (Held On 10-Jan-2019 Morning]

    A) increase in atomic radii and decrease in ionic radii

    B)                  increase in both atomic and ionic radii

    C)                  decrease in both atomic and ionic radii

    D)                  decrease in atomic radii and increase in ionic radii

    Correct Answer: C

    Solution :

    Due to lanthanoid contraction both atomic radii and ionic radius decreases gradually in the lanthanoid series


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