Presence and amount of counter ions.
The complex, along with its counter ions (if required), is called a coordination compound.
This will depend on what the counter ion is.
The morphology of the electrolysis can be very sensitive to the choice of counter ion.
This type of isomerism occurs when the counter ion of the complex is also a potential ligand.
The Pb(2+) will remain dissolve as long as its counter ion is the nitrate.
In medical applications the counter ions are usually sodium and calcium.
Magnesium was the standard counter ion until calcium replaced it in the 1950s.
The cooking liquor is prepared by adding the counter ions as hydroxides or carbonates.
Some involve the counter ions of the acid or base; others do not.