Answer: Such a bond forms when the valence (outermost) electrons of one atom are transferred permanently to another atom.
Explanation:Image result for how are ionic bonds formedmasterconceptsinchemistry.com
Ionic bond. Ionic bond, also called electrovalent bond, type of linkage formed from the electrostatic attraction between oppositely charged ions in a chemical compound. Such a bond forms when the valence (outermost) electrons of one atom are transferred permanently to another atom. And i just took a quiz and got it right.