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The correct order of radii is:...

The correct order of radii is:

A

`NltBeltB`

B

`F^(-) lt O^(2-) lt N^(3-)`

C

`NaltLiltK`

D

`Fe^(3+) lt Fe^(2+) lt Fe^(4+)`

Text Solution

Verified by Experts

The correct Answer is:
B
For isoelectronic species more the nuclear charge lesser the ionic radius.
`F^(-)(Z=9), O^(2-) (Z=8) , N^(3-) (Z=7)`
Thus, `F^(-) lt O^(2-) lt N^(3-)`.
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