The ionic radii of `F^(-)` and `O^(2-)` respectively are 1.33 Å and 1.4 Å, while the covalent radius of N is 0.74 Å.
The correct statement for the ionic radius of `N^(3-)` from the following is :

Options

A. It is bigger than `F^(-)` and N, but smaller than of `O^(2-)`
B. It is bigger than `O^(2-)` and `F^(-)`
C. It is smaller than `O^(2-) and F^(-)` but bigger than of N
D. It is smaller than `F^(-)` and N

Answer

B

Explanation

`F^(-), O^(2-) and N^(3-)` all are isoelectronic species in which `N^(3-)` have least number of protons due to which it.s size increases as least nuclear attraction is experienced by the outer shell electrons
Size order `N^(3-) gt O^(2-) gt F^(-)`