Question

which of the following could not form an ionic compound? check all that apply. li+ and cl- f- and o2- ba2+ and ag+ mg2+ and s2-

Explanation:

Step1: Understand ionic compound formation

Ionic compounds form between a cation (positive ion) and an anion (negative ion).

Step2: Analyze each pair

• \(Mg^{2 +}\) and \(S^{2-}\): \(Mg^{2+}\) (cation) and \(S^{2 -}\) (anion) can form \(MgS\) (ionic compound).
• \(Ba^{2+}\) and \(Ag^{+}\): Both are cations. Ionic compounds need one cation and one anion. So, they cannot form an ionic compound.
• \(F^{-}\) and \(O^{2-}\): Both are anions. Ionic compounds need one cation and one anion. So, they cannot form an ionic compound.
• \(Li^{+}\) and \(Cl^{-}\): \(Li^{+}\) (cation) and \(Cl^{-}\) (anion) can form \(LiCl\) (ionic compound).

Answer:

B. \(Ba^{2+}\) and \(Ag^{+}\), C. \(F^{-}\) and \(O^{2-}\)