#negative ion

• Anion — An ion charged with negative electricity, containing more electrons than protons within its atomic or molecular structure. During the electrolysis process, the anion naturally migrates toward the positive pole (anode), driving fundamental oxidation reactions in electrochemistry and biological cellular processes.
• Anionic — Pertaining to anions, relating to anions, or composed of anions; possessing a net negative electrical charge within a chemical or biological system. The term characterizes molecular bonds, crystalline lattices, cellular membranes, or synthetic polymers where the electrostatic behavior is driven by the presence and migration of negative ionic species.