The property/properties that show irregularit | vedclass

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(C) The trends for the first four elements of group-$17$ $(F, Cl, Br, I)$ are as follows:$1$. Covalent radius: $F < Cl < Br < I$ (Regular trend).$2$.

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$B$ only

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(C) The trends for the first four elements of group-$17$ $(F, Cl, Br, I)$ are as follows:$1$. Covalent radius: $F $2$. Electron affinity: $Cl > F > Br > I$ (Irregular,as $F$ has lower electron affinity than $Cl$ due to small size and inter-electronic repulsion).$3$. Ionic radius: $F^- $4$. First ionization energy: $F > Cl > Br > I$ (Regular trend).Thus,only electron affinity shows an irregularity in the expected periodic trend.

The property/properties that show irregularity in the first four elements of group-$17$ is/are:

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