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    Which of the following order does not agree with the variation of the property against it ?
    Question

    Which of the following order does not agree with the variation of the property against it ?

    A.

    B < C < N < O (increasing first ionisation enthalpy)

    B.

    I < Br < F < Cl (increasing electron gain enthalpy)

    C.

    Li < Na < K < Rb (increasing metallic radius)

    D.

    Al+ < Mg² + < Na+ < F(increasing ionic size)

    Correct option is B

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