Werner Theory
Werner studies the ammoniated compound of Co, Cr, Ni,……etc the found that co-ordination compound has two types valency on the basic of his experiment.
Primary valency
It is ionisable part of co-ordination compound.
It decided the oxidation number of central metal.
It is present outside the co-ordination sphere.
Secondary Valency
It is non-ionisable part of co-ordination compound.
It decided the geometry or Shape of Co-ordination compound.
It is present inside the co-ordination sphere.
Example of Primary & Secondary Valency
Werner Theory,FAQ
Q What is Werner theory ?
Werner explain the ammoniated complex compound Which has two types of valency primary and secondary valency.
Q What is difference between primary and secondary valency?
Primary Valency | Secondary Valency |
It is ionisable part of co-ordination compound. It decided the oxidation number of central metal. It is present outside the co-ordination sphere. | It is non-ionisable part of co-ordination compound. It decided the geometry or Shape of Co-ordination compound. It is present inside the co-ordination sphere. |