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The correct order of radii is:...

The correct order of radii is:

A

`NltBeltB`

B

`F^(-)ltO^(2-)ltN^(3-)`

C

`NaltLiltK`

D

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

Text Solution

Verified by Experts

The correct Answer is:
B
Effective nuclear charge (i.e., Z/e ratio) decreases from`F^(-)` to `N^(3-)` hence the radii follows the order : `F^(-)ltO^(2-)ltN^(3-)Z//e" for "F^(-)=9//10=0.9`, for `O^(2)=8//10=0.8" for "N^(3-)7//10=0.7`
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