JEE Mains · Chemistry · STD 11 - 3. Classification of elements and periodicity in properties
The ionic radii of \(O _{2}- F ^{-}, Na ^{+}\) and \(Mg ^{2+}\) are in the order :
- A \(F ^{-}> O ^{2-}> Na ^{+}> Mg ^{2+}\)
- B \(Mg ^{2+}> Na ^{+}> F ^{-}> O ^{2-}\)
- C \(O ^{2-}> F ^{-}> Mg ^{2+}> Na ^{+}\)
- D \(O ^{2-}> F ^{-}> Na ^{+}> Mg ^{2+}\)
Answer & Solution
Correct Answer
(D) \(O ^{2-}> F ^{-}> Na ^{+}> Mg ^{2+}\)
Step-by-step Solution
Detailed explanation
\(O ^{-2}\) \(F ^{-}\) \(Na ^{+}\) \(Mg ^{2+}\) \(Z\) \(8\) \(9\) \(11\) \(12\) \(e^{-}\) \(10\) \(10\) \(10\) \(10\) \(\frac{z}{e}\) \(0.8\) \(0.9\) \(1.1\) \(1.2\) as \(\frac{z}{e}\) ratio increases size decreases. Thus correct ionic radiit order is…
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