JEE MAIN - Chemistry (2021 - 25th July Evening Shift - No. 3)
The ionic radii of F$$-$$ and O2$$-$$ respectively are 1.33$$\mathop A\limits^o $$ and 1.4$$\mathop A\limits^o $$, while the covalent radius of N is 0.74$$\mathop A\limits^o $$.
The correct statement for the ionic radius of N3$$-$$ from the following is :
The correct statement for the ionic radius of N3$$-$$ from the following is :
It is smaller than F$$-$$ and N
It is bigger than O2$$-$$ and F$$-$$
It is bigger than F$$-$$ and N, but smaller than of O2$$-$$
It is smaller than O2$$-$$ and F$$-$$, but bigger than of N
Explanation
F$$-$$, O2$$-$$ and N3$$-$$ all are isoelectronic species in which N3$$-$$ 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
N3$$-$$ > O2$$-$$ > F$$-$$
N3$$-$$ > O2$$-$$ > F$$-$$
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