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

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

Canvas Classes · Accepted Answer

Strategy:
 Isoelectronic species share the same number of electrons. Their physical properties, such as ionic radius, are then determined by the nuclear charge ().

Step 1: Evaluate Statement A
- Electrons: .
- All have 10 electrons. (Correct)

Step 2: Evaluate Statement B
- Nuclear charge is the number of protons ().
-  values: . They are not the same. (Incorrect)

Step 3: Evaluate Statements C and D
- For isoelectronic ions, size .
-  has the lowest  largest radius. (Correct)
-  has the highes

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