Complex Ions!

Complex Ions is a topic which is actually not tooooo difficult. Seems that the really complex part is remembering the colors of the ions.

Simple Explanations on Complex Ions, Colors, etc.
Crap (well this is not so "within-the-syllabus", but I think you SHOULD look at it...)
Click HERE and you'll end up somewhere in Alpha Centauri (this one, YOU'D BETTER LOOK AT THIS, even though it might be a bit confusing, it MIGHT help in your P5)

Chelates (for those who have not heard of this before, CHELATES are just like complex ions with their ligands, and chelates are often used to cover a metal ion so it could be transported safely in the body, period)
The OMG Chemicals (just applications, read only, EDTA and ethylenediamine and other stuff)
Waaaah!!! (you're soooo going to love this)
LoL (the webpage looks cool though, the content, just read)
Plant Nutrition + Amino Acid Chelates (this one, connected to the link above it)
Chelate in Medicine
Chelates in other fields (don't look at the advertisements for the sake of your mental health)