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The ionic radii of Na+ , F , O2–, N3– follow the order 

(A) O2– > F > Na+ > N3– 

(B) N3– > Na+ > F > O2– 

(C) N3– > O2– > F > Na

(D) Na+ > F > O2– > N3– 

1 Answer

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Best answer

Correct option (A) O2– > F > Na> N3– 

Explanation:

For iso-electronic species 

Ionic size ∝ –ve charge on anion 

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