These are the complex compounds in which transition metal atoms are bound to a number of anions or neutral molecules.
Postulates of Werner’s theory of coordination compounds:
In coordination compounds, there are two types of linkages (valences) – primary and secondary.
The primary valences are ionisable and are satisfied by negative ions.
The secondary valences are non-ionisable and are satisfied by negative ions or neutral molecules. The secondary valence is equal to the coordination number of a metal and remains fixed for a metal.
Different coordination numbers have character…
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