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The correct order of radii is...

The correct order of radii is

A

`N lt Be lt B`

B

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

C

`Na lt Li lt K`

D

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

Text Solution

Verified by Experts

The correct Answer is:
B, C, D
Among isoelectronic species, greater the negative charge, greater the ionic size, hence `F^(-) lt O^(2-) lt N^(3-)`
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