A) \[N<Be<B\]
B) \[{{F}^{-1}}<{{O}^{2-}}<{{N}^{3-}}\]
C) \[Na<Li<K\]
D) \[F{{e}^{3+}}<F{{e}^{2+}}<F{{e}^{4+}}\]
Correct Answer: D
Solution :
Correct order of radii is\[{{F}^{-}}<{{O}^{2-}}<{{N}^{3-}},\] as the negative charge increased it means more electrons are added so the more negative charge has more/radii.
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