Chelation is a type of bonding of ions and molecules to metal ions. It involves the formation or presence of two or more separate coordinate bonds between a polydentate ligand and a single central metal atom. These ligands are called chelants, chelators, chelating agents, or sequestering agents.

Which is chelating agent?

Chelating agents are chemical compounds that react with metal ions to form a stable, water-soluble complex. ... Specific chelating agents bind iron, lead, or copper in the blood and can be used to treat excessively high levels of these metals. Chelating agents may also be used in the treatment of heavy metal poisoning.

What is chelating agent give example?

A chelating agent is a substance whose molecules can form several bonds to a single metal ion. ... An example of a simple chelating agent is ethylenediamine. ethylenediamine. A single molecule of ethylenediamine can form two bonds to a transition-metal ion such as nickel(II), Ni2+.