An is a negatively charged ion formed when an atom or molecule gains one or more electrons. This surplus of electrons relative to protons gives the particle a net negative charge, a fundamental concept in chemistry that governs how matter bonds and reacts. The Basics of Anion Formation
: The number of electrons gained is indicated by a superscript after the chemical symbol (e.g., Cl−cap C l raised to the negative power for a gain of one electron, O2−cap O raised to the 2 minus power for a gain of two). An is a negatively charged ion formed when
: In simple monoatomic anions, the ending of the element's name is typically replaced with "-ide". For example, chlorine becomes chloride ( Cl−cap C l raised to the negative power ) and oxygen becomes oxide ( O2−cap O raised to the 2 minus power Common Examples : In simple monoatomic anions, the ending of