Question
Question: Complex compounds which have both primary and secondary valency are ionizatble of no...
Complex compounds which have both primary and secondary valency are ionizatble of no
Primary valency is ionisable
Secondary valency is ionisable
Primary and secondary valencies are ionisable
Neither primary nor secondary valency is ionisable.
Primary valency is ionisable
Solution
According to Werner's theory of coordination compounds, primary valency refers to the oxidation state of the central metal atom, which is satisfied by anions and is ionizable. Secondary valency refers to the coordination number of the central metal atom, which is satisfied by ligands (neutral or anionic) and is non-ionizable. Complex compounds that possess both primary and secondary valencies are ionizable because their primary valency is ionizable. The phrase "ionizatble of no" in the question is grammatically awkward and likely intended to ask about the ionizability of such compounds.