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  3. Chemistry
  4. The ionic radii (in Å) of N3-,O2- and F- respectively are

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Q. The ionic radii (in $Å$) of $N^{3-},O^{2-} $ and $F^-$ respectively are

JEE MainJEE Main 2015Classification of Elements and Periodicity in Properties

Solution:

$\underset{\text { size decreasing }}{\stackrel{ N ^{3-}, O ^{2-}, F ^{-}}{\longrightarrow}}$
z/e increases so size $\downarrow$
So $N ^{3-}$ has longest radii imporve to $O ^{2-}$
SO $1.71>1.40>1.36$