What is meant by inidentate , didentate and ambidentate ligands ?Give two examples for each.

Explanation

(i) UNDENTATE LIGAND (or) Monodentate
When a ligand is bonded through one donor site to central metal atom/ion it is said to be unidentae ligand
E.g.`Cl^(-) ,Co,NH_3,, H_2O, ` etc
(ii) DIDENTATE LIGAND :(or) Bidentate
When a ligand is bonded through two donor sites to central metal atom/ion. it is said to be didentate ligand E.g.Oxalate 1,2 -ethanediamine
(iii) AMBIDENTATE LIGAND
When a ligand is bonded through two different atoms it is said to be ambidentate ligand
E.g: ` NO_2^(-) , SCN^(-) , CN^(-) `