Q.

Which of the following represents chelating ligand?

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a

DMG

b

OH

c

Cl

d

H2O

answer is B.

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Detailed Solution

Dimethylglyoxime, it is a bidentate ligand in which both the nitrogen atoms of a dmg molecule donates electrons to the central metal atom and forms the coordinate bonds. And thus, is a chelating ligand and forms the chelates. DMG is mostly used for the estimation of nickel as follows:

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