Polydenate Ligands/Denticity

[Aliza Hacking 1A]

Hi! Does anyone have a semi-cohesive strategy that works for them in terms of determining the denticity of different compounds/ligands? I don't really know the best way to approach those problems. Thank you!!

[Gavin Trent 2F]

A strategy that works for me is to draw out / imagine the lewis structure, and see which atoms have lone pairs. If two or more atoms have lone pairs, and they are two or more atoms apart from each other (spacers), then the compound will be polydentate.