Question

. The co-ordination of water with metal ion is a ________ acid-base reaction.

Answer 1

The co-ordination of water with metal ion is a Lewis acid-base reaction.

Coordination compounds, such as the FeCl₄^- ion and CrCl₃ 6 NH₃, are called such because they contain ions or molecules linked, or coordinated, to a transition metal. They are also known as complex ions or coordination complexes because they are Lewis acid-base complexes. The ions or molecules that bind to transition-metal ions to form these complexes are called ligands (from Latin, "to tie or bind"). The number of ligands bound to the transition metal ion is called the coordination number.