What is the primary valence?

The primary valence is the number of negative ions needed to satisfy the charge on the metal ion. The secondary valence is the number of ions of molecules that are coordinated to the metal ion. Werner assumed that the secondary valence of the transition metal in these cobalt(III) complexes is six.

What do you mean by secondary valency?

The secondary valency is the number of ions of molecules that are coordinated to the metal ion or it is the number of ligands attached or coordinated to metal ions.

Why is secondary valency directional?

Primary valency is satisfied by negative ion whereas secondary valancies are satisfied by negative ion or by neutral molecules. The secondary valancies are always directed towards fixed position in space and this cause definite geometry of the coordinate compound.

What is the primary and secondary valency of PT in PT en 2cl2?

Now, the primary valency is its oxidation number, i.e. Hence the oxidation state of Pt in the complex is +2. This is the primary valency of platinum, i.e. +2. Hence, the primary and secondary valency of platinum in the given complex is 2,6.

What is Warner theory?

Werner’s theory states that- 1. Metals possess two types of valencies called primary / ionizable and secondary / non – ionizable valency. 2. Every metal atom has a tendency to satisfy both its primary and secondary valencies.

What are Homoleptic and Heteroleptic complexes?

The Complexes compounds in which all the ligands are bound to the metal center which are identical to each other are known as homoleptic complexes and the complexes in which the metal atoms or ions are linked with more than one kind of ligands are known as heteroleptic complexes.

What is the primary and secondary valency of co en 3 Cl3?

The cobalt(III) complexe three Cl- ions are needed to satisfy the primary valency of the Co3+ ion. In this complex the primary valency is 3; and the secondary valency is 6.