A) \[{{O}^{2-}}\]
B) \[{{B}^{3+}}\]
C) \[L{{i}^{+}}\]
D) \[{{F}^{-}}\]
Correct Answer: A
Solution :
\[{{O}^{-2}}\] has the highest value of ionic radii as this can be explained on the basis of \[Z/e\,\,\left\{ \frac{\text{Nucleaus charge}}{\text{No}\text{. of electron}} \right\}\] Whereas Z / e ration increases, the size decreases and when Z / e ration decreases the size increases.
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