Ions

Ion

    • A positively or negatively electrically charged particle
    • An atom or group of atoms which has lost (or gained) one or more electrons
    • When an atom loses one or more electrons, it becomes a positively charged ion
    • When an atom gains one or more electrons, it becomes a negatively charged ion
    • An ion may contain MORE THAN ONE TYPE OF ATOM
      • eg. NO3-
      • (a Nitrate Ion)
    • An ion may possess MORE THAN ONE UNIT OF CHARGE (either negative / positive)
      • eg. Al3+ , O2-, SO42-
      • repsectively an Aluminium ion, an Oxygen ion and a Sulphate ion