Answer
Ligands that provide 2 pairs of electrons to the central metal atom are called bidentate.
Ligands that provide more than 2 pairs of electrons to the central metal atom are called polydentate.
Work Step by Step
The term 'Bidentate' refers to those ligands which can donate two pairs of electrons from two different atoms to the central metal atom.
The term 'Polydentate' refers to those ligands which can provide more than two pairs of electrons from more than two different atoms to the central metal atom.
