Order of ionic radii for a set of ions

1. A.
   $K^{+} > {Na}^{+} > {Mg}^{2 +} > {Al}^{+ 3}$
2. B.
   ${Na}^{+} > K^{+} > {Mg}^{2 +} > {Al}^{+ 3}$
3. C.
   ${Mg}^{2 +} > {Na}^{+} > {Al}^{+ 3} > K^{+}$
4. D.
   ${Al}^{+ 3} > K^{+} > {Mg}^{2 +} > {Na}^{+}$

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1. A.
   $P^{3 -} > S^{2 -} > {Cl}^{-} > K^{+} > {Ca}^{2 +}$
2. B.
   ${Cl}^{-} > S^{2 -} > P^{3 -} > {Ca}^{2 +} > K^{+}$
3. C.
   $P^{3 -} > S^{2 -} > {Cl}^{-} > {Ca}^{2 +} > K^{+}$
4. D.
   $K^{+} > {Ca}^{2 +} > P^{3 -} > S^{2 -} > {Cl}^{-}$

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1. A.
   ${Mg}^{2 +} < {Na}^{+} < F^{-} < O^{2 -} < N^{3 -}$
2. B.
   $N^{3 -} < O^{2 -} < F^{-} < {Na}^{+} < {Mg}^{2 +}$
3. C.
   $F^{-} < {Na}^{+} < O^{2 -} < {Mg}^{2 +} < N^{3 -}$
4. D.
   ${Na}^{+} < F^{-} < {Mg}^{2 +} < O^{2 -} < N^{3 -}$

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1. A.
   $S^{2 -} < {Cl}^{-} < {Ca}^{2 +} < K^{+}$
2. B.
   $K^{+} < S^{2 -} < {Ca}^{2 +} < {Cl}^{-}$
3. C.
   ${Ca}^{2 +} < K^{+} < {Cl}^{-} < S^{2 -}$
4. D.
   ${Cl}^{-} < {Ca}^{2 +} < K^{+} < S^{2 -}$

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1. A.
   (B), (C) and (D) only
2. B.
   (A), (B), (C) and (D)
3. C.
   (C) and (D) only
4. D.
   (A), (C) and (D) only

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