which of the following could not form an ionic compound? check all that apply

An ionic bond is formed between a metal ion a nonmetal ion hence Li^+ and Cl^- will form an ionic bond.
An ionic bond is formed between two ions, a metal ion(cation) and a nonmetal ion (anion). The ionic compound is therefore an ion pair because the ions are held together by electrostatic attractions to each other.
Since an ionic bond is formed between a metal ion a nonmetal ion, the following will form an ionic bond;
Learn more: https://brainly.com/question/9743981