What is Werner’s Theory?

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 ValencySecondary 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.

 

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