Easy for you to say!
RDJ
From
www.Britannica.com:
chelate
any of a class of coordination or complex compounds consisting of a central metal atom attached to a large molecule, called a ligand, in a cyclic or ring structure. An example of a chelate is the ethylenediamine-cadmium(II) complex: The ethylenediamine ligand has two points of attachment to the cadmium ion, thus forming a ring; it is known as a bidentate ligand. Ligands that can attach to the same metal ion at two or more points are known as polydentate ligands. All polydentate ligands are chelating agents.
Chelates are more stable than nonchelated compounds of comparable composition, and the more extensive the chelation