The correct order of increasing ionic radii is .... .

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

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If the ionic radii of $K^{+}$ and $F^{-}$ are nearly the same (i.e.,$1.34 \ \mathring{A}$),then the atomic radii of $K$ and $F$ respectively are

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The correct order of radii is

Assertion $(A)$: The ionic radii of $Na^{+}$ and $F^{-}$ are same.
Reason $(R)$: Both $Na^{+}$ and $F^{-}$ are isoelectronic species.
The correct answer is:

Which of the following orders is incorrect for ionic size?

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Which one of the following species possesses maximum size?

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