Explain the classification of ligands on the basis of charge.

(N/A) $i$. Anionic ligands: Ligands that carry a negative charge are called anionic ligands. Examples include $Cl^{-}, Br^{-}, I^{-}, C_{2}O_{4}^{2-}, SO_{4}^{2-}, NO_{3}^{-}, NO_{2}^{-}$.
$ii$. Cationic ligands: Ligands that carry a positive charge are called cationic ligands. Examples include $NO^{+}, NH_{2}NH_{3}^{+}$.
$iii$. Neutral ligands: Ligands that carry no charge are called neutral ligands. Examples include $H_{2}O, CH_{3}OH, NH_{3}, CO$,and pyridine.