What is the Primary and Secondary Valence of PtCl2.2NH3?
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Solution
Primary valency is the number of ions required to satisfy the charge on the metal ion.
Secondary valency is the number of ions of molecules that are coordinated to the metal ion.
Coordination number of Pt in PtCl2.2NH3 is 4, which are satisfied by 2Cl and 2NH3. Hence, it does not have any primary valency and has 4 secondary valency.