Chelating is a process that involves the formation or use of chelate complexes. A chelate is a ring-shaped molecule in which there are at least three bonds to a central metal atom, usually calcium, magnesium, iron, copper, zinc, or manganese. The word "chelating" comes from the Greek word chele (meaning claw), referring to the hook-like shape of these molecules that enable them to grab onto and hold on tightly to metal ions.
Chelation therapy is a medical procedure used to treat heavy metal poisoning, such as lead or mercury, by using chelating agents that bind to the metal ions and help remove them from the body through urine. Chelates are also commonly used in agriculture, water treatment, and various industrial processes for their ability to form stable complexes with metal ions, making it easier to separate or transport them.