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A compound in which an ion is enveloped by complexation (see the diagram) with a chelating agent, which provides at least two atoms with lone pairs that can form coordinate bonds with the metal ion. Examples of chelating agents are 1,2-diaminoethane, oxalate ions and, especially, EDTA. The name comes from the Greek for ‘crab\'s claw’.

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Other Terms : effective resistance | Tracheophyta | cephalopod



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