Qn)

Write the postulates of Werners theory of complexes

  • Answer)

    1. In coordination compounds ,metals shows two type of valances -primary valence and secondary valence

    2. Primary valences are normally ionisable but secondary valences are nonionisable

    3. Primary valences are satisfied by negative ions while secondary valences are satisfied by nutral molecules or -ve ions 

    4. Secondary valences are equal to coordination number and is fixed for a metal

    5. Secondary valences are directional and determines the geometry of the complexes




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