Question

explain the warner's co ordination theory​

Answer 1

Limitations of Werner's Theory: This topic explains about Werner's theory: Structure of coordination compounds. A coordination compound is a complex compound which contains a metal bonded to ligands. A ligand can be an atom, an ion or a molecule that donates electrons to the metal.

Answer 2

In 1823, Werner put forth this theory to describe the structure and formation of complex compounds or coordination compounds. It is because of this theory that he got the Nobel prize and is known as the father of coordination chemistry. Are you ready to learn the important postulates of this theory?

Postulates of Werner’s Theory

The important postulates of Werner’s theory are:

The central metal or the metal atoms in coordination compounds show two types of valency. They are the primary and the secondary valency.

The primary valency relates to the oxidation state and the secondary valency relates to the coordinate number.

The number of secondary valences is fixed for every metal atom. It means that the coordination number is fixed.

The metal atom works towards satisfying both its primary and secondary valencies. A negative ion satisfies the primary valency. On the other hand, a negative ion or neutral molecules satisfy secondary valencies.