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tysmI found this in the Pearson Chem textbook (dm me if you need a copy):
Transition metal ions are small and highly charged. This high charged density results in an ability to strongly attract anions/small polar molecules (ligands), forming a complex ion.
The process of ligands forming an ion/compound around a metal ion is referred to complexation.
Below is an example of a metal complex Al(OH)4-
View attachment 40021
The charge of the metal complex can be found by determining the oxidation state of the total compound.
- Aluminium has a charge +3
- Hydroxide has a charge -1
- Thus net charge = 3 + (-1) * 4 = -1
There wasn't much else I could find on complexation for the scope of the syllabus, but I hope it helped!
The syllabus states we need to know complexation reactions to determine the presence of 8 cations.tysm
what other examples do we need to know?