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The ionic rad...

Question

The ionic radii of isoelectronic species $N^{3 -}, O^{2 -}$ and $F^{-}$ in $o A$ are respectively:

A

1.36, 1.40, 1.71

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B

1.36, 1.71, 1.40

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C

1.71, 1.40, 1.36

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D

1.71, 1.36, 1.40

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Solution

The correct option is C $1.71, 1.40, 1.36$
Among isoelectronic ions, size increases as the negative charge increases.
i.e. $F^{-} < O^{2 -} < N^{3 -}$ .
So option (c) is the correct answer

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