Question

What is coordination complex?

Answer 1

A coordination complex dissociates in water with at least one complex ion.

For example: K₄[Fe(CN)₆] dissociates as the complex ion and counter ion.

\[\ce{K4[Fe(CN)6] ->\underset{(Counter ion)}{4K+_{(aq)}} + \underset{(Complex ion)}{[Fe(CN)6]^{4-}}}\]