Which of the following has the smallest size

Na⁺

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Mg⁺²

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Cl^-

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F^-

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Solution

The correct option is B
Mg⁺²

As the nuclear charge per $e^{-}$ is maximum in $M g^{+ 2}$ , it has smallest size among $N a^{+} M g^{+ 2} C l^{-}$ and $F^{-}$ .

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Which of the following has the smallest size

The correct option is B Mg+2 As the nuclear charge per e− is maximum in Mg+2, it has smallest size among Na+Mg+2Cl− and F−.

The correct option is B
Mg⁺²

As the nuclear charge per $e^{-}$ is maximum in $M g^{+ 2}$ , it has smallest size among $N a^{+} M g^{+ 2} C l^{-}$ and $F^{-}$ .