The statement(s) that are correct about the species O2– , F –, Na+ and Mg2+. (A) All are isoelectronic (B) All have the same nuclear charge (C) O2– has the largest ionic radii (D) Mg2+ has the smalles

Question

The statement(s) that are correct about the species O2– , F –, Na+ and Mg2+. (A) All are isoelectronic (B) All have the same nuclear charge (C) O2– has the largest ionic radii (D) Mg2+ has the smallest ionic radii Choose the most appropriate answer from the options given below :

(A) (B), (C) and (D) only
(B) (A), (B), (C) and (D)
(C) (C) and (D) only
(D) (A), (C) and (D) only

Prashant Kotian · Accepted Answer

Correct answer: D. O–2 F– Na+ Mg+2 (No. of e–) 10 10 10 10 (Ionic radius) O–2 > F– > Na+ > Mg+2 Zeff O–2 < F– < Na+ < Mg+2

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