•Dependingonthenumberofdonoratomspresentinthemoleculeorion,ligandscanbeclassifiedas：monodentate:(H2O::NH3)bidentate：（H2N-CH2-CH2-NH2）polydentate：(EDTA)alsocalledchelatingagents Coordinationnumber •Coordinationnumber:thenumberofdonoratomssurroundingthecentralmetalatominacomplexion.Commonly,itis2,4,5or6For...