Natural Science 2 (NAS 2) Challenge Practice Exam

An ionic bond is characterized by the transfer of electrons from one atom to another. This process occurs when one atom, typically a metal, loses one or more electrons and becomes positively charged (a cation), while another atom, usually a non-metal, gains those electrons and becomes negatively charged (an anion). The resulting electrostatic attraction between these oppositely charged ions forms the ionic bond.

This bond is distinct from other types like covalent bonds, which involve the sharing of electron pairs between atoms. In contrast to attraction between two neutral atoms, which does not account for the charged nature of ions involved in ionic bonds, the ionic bond specifically arises from the interaction between charged species. Additionally, while ionic bonds often occur between metallic and non-metallic elements, the defining characteristic is the transfer of electrons rather than the mere combination of elements.