GENERAL KNOWLEDGE

Detailed explanation-1: -When an atom gains/loses an electron, the atom becomes charged, and is called an ion. Gaining an electron results in a negative charge, so the atom is an anion. Losing an electron results in a positive charge, so atom ion is a cation. Hope this helps.

Detailed explanation-2: -Definition: An ion is an atom or molecule which has lost or gained one or more electrons, and carries a net electric charge. If the result is an atom with more electrons than protons, the ion is negatively charged.

Detailed explanation-3: -Ions are atoms that have a positive or negative charge because they have unequal numbers of protons and electrons. If atoms lose electrons, they become positive ions or cations. If atoms gain electrons, they become negative ions or anions. Like fluoride, other negative ions usually have names ending in –ide.

Detailed explanation-4: -An ion is an atom or group of atoms that has an electric charge. Ions with a positive charge are called cations. Ions with a negative charge are called anions. Many normal substances exist in the body as ions.