Concept:An ionic bond is formed by the electrostatic attraction between oppositely charged ions.Explanation:One atom transfers its valence electrons to another atom. The atom that loses electrons becomes a positively charged ion (cation). The atom that gains electrons becomes a negatively charged ion (anion). These opposite charges attract, creating the ionic bond. Option A correctly states this attraction. Option B is wrong because only one atom loses electrons, not both. Option C is false—two metals form metallic bonds, not ionic. Option D describes covalent bonding, which involves sharing of electrons.
