In which of the following options order of arrangement does not agree with the variation of property indicated against it?A. `Al^(3+)ltMg^(2)ltNa^(+)ltF^(-)` (increasing ionic size)B. BltCltNltO(Increasing first ionisation enthalpy)C. IltBrltFltCl(increasing electron gain enthalpy)D. LiltNaltKltRb(Increasing metallic radius)

In which of the following options order of arrangement does not agree

1.	In which of the following options order of arrangement does not agree with the variation of property indicated against it?A. `Al^(3+)ltMg^(2)ltNa^(+)ltF^(-)` (increasing ionic size)B. BltCltNltO(Increasing first ionisation enthalpy)C. IltBrltFltCl(increasing electron gain enthalpy)D. LiltNaltKltRb(Increasing metallic radius)
Answer» Correct Answer - B Ionisation enthalpy of BltC but NgtO due to half-filled orbits in N which have extra stability.Electron gain enthalpy of CigtF due to bigger size and lesser electronic repulsion.

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