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Solution


Q.

Ethylene diaminetetraacetate (EDTA) ion is              [2021]
1 tridentate ligand with three "N" donor atoms  
2 hexadentate ligand with four "O" and two "N" donor atoms  
3 unidentate ligand  
4 bidentate ligand with two "N" donor atoms.  

Ans.

(2)

Ethylenediaminetetraacetate ion (EDTA4-) is an important hexadentate ligand. It can bind through two nitrogen and four oxygen atoms to a central metal ion.