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Question Paper from: IIT JEE Mains Shift 2 25th July 2021

If the covalent radii of $F^{-} = 1.33 \overset{˚}{A}, O^{2 -} = 1.40 \overset{˚}{A}$ and for $N = 0.74 \overset{˚}{A}$ . Then which of the following is correct:

The ionic radius of $N^{3 -}$ is between $F^{-}$ and $O^{2 -}$ but greater than 'N'.

The ionic radius of $N^{3 -}$ is greater than both $F^{-}$ and $O^{2 -}$ and greater than 'N'.

The ionic radius of $N^{3 -}$ is less than $F^{-}$ and $O^{2 -}$ but less than 'N'.

The ionic radius of $N^{3 -}$ is less than $F^{-}$ and $O^{2 -}$ but greater than 'N'.

Solution:

Chapter Name: Chemical Bonding and Molecular Structure

Difficulty Level: Moderate

$F^{-} = 1.33 \overset{˚}{A}$

$N = 0.74 \overset{˚}{A}$

$O^{2 -} = 1.40 \overset{˚}{A}$

$N^{3 -} = 1.46 \overset{˚}{A}$

The ionic radius of $N^{3 -}$ is greater than both $F^{-}$ and $O^{2 -}$

Size of Anion $\propto$ Magnitude of negative charge

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IIT JEE Mains Shift 2 25th July 2021

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