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According to Werner's theory of coordination compounds:
  • a)
    Primary valency is ionizable
  • b)
    Secondary valency is ionizable
  • c)
    Primary and secondary valencies are ionizable
  • d)
    Neither primary nor secondary valency is ionizable
Correct answer is option 'A'. Can you explain this answer?
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According to Werners theory of coordination compounds:a)Primary valenc...
Primary valency is ionizable according to Werner's theory of coordination compounds. 
According to Werner's theory, a coordination compound has two different types of valency, primary and secondary. The primary valency or the ionizable valency is satisfied by the negatively charged ions in the solution.
Primary valency is ionizable and is satisfied by the negative charges whereas Secondary valency is non-ionizable and is satisfied by the positive charged or neutral species in the solution. The primary valency corresponds to the oxidation state of the metal ion.
The secondary valency corresponds to the coordination number of the metal complex. The molecules or ions that satisfy the secondary valency are called ligands and they can be either negatively charged or neutral.
For example, in [Cu (NH3)4] SO4 primary valency is 2 and secondary valency is 4. Secondary valence refers to coordination number. Since copper is coordinated to 4 ammonia ligands, secondary valence is 4. Primary valence is satisfied by anions. Since sulphate ion has -2 charge, primary valence is 2.
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According to Werners theory of coordination compounds:a)Primary valency is ionizableb)Secondary valency is ionizablec)Primary and secondary valencies are ionizabled)Neither primary nor secondary valency is ionizableCorrect answer is option 'A'. Can you explain this answer?
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