Addition of `AgNO_(3)` solution to aqueous solution of each of the `Pt(IV)` amines viz (i) `PtCI_(4).6NH_(3)` (ii) `PtCI_(4).5NH_(3)` (iii) `PtCI_(4)` (iv)` PtCI_(4).3NH_(3)` and (v) `PtCI_(4).2NH_(3)` was found by Werner to give `4,3,2,1` and zero moles of `AgCI` per mole of the amines repectively How did Werner explain these observations? .

Explanation

(i) `PtCI_(4).%NH_(3)` Since the This amine 4moles of AGCI in this amine all the four `CI^(Θ)` ions are ionisable and hence this amine has all four `CI^(Θ)` ions outside the coordination sphere Thus Werner formulated this amine as `Pt(NH_(3))_(6)]CI_(4)`
(ii) `PtCI_(4).5NH_(3)` Since the amine gives 3 moles of AgCI in this amine only three `CI^(Θ)` ions are ionisable and hence this amine has only three `Ci^(Θ)` ions outside the coordination sphere Thus Werner formulated this amine as `[Pt(NH_(3))_(5)CI]CI_(3)`
(iii) `PtCI_(4).4NH_(3)` Since this amine gives 2moles of AgCI in this amine only two `CI^(Θ)` ions are ionisable and hence this amine has only two `CI^(Θ)` ions outside the coordination sphere Thus Werner formulated this coordination sphere Thus Werner formulated this amine as `[Pt(NH_(3))_(4).C1_(2)]CI_(2)`
(iv) `PtCI_(4).3NH_(3)` Since this amine gives 1 mole of agCI in this amine only one `CI^(Θ)` ion is ionisable and hence this amine has only one `CI^(Θ)` ions outside the coordination sphere Thus Werner formulated this amine as `[Pt(NH_(3))_(3)CI_(3)]CI`
(iv) `PtCI_(4).2NH_(3)` Since this amine gives no `AgCI` in this amine no `CI^(Θ)` ion is ionisable i.e no `CI^(Θ)` ion is present outside the coordination sphere or all the four `CI^(Θ)` ions are present inside the coordination sphere Thus Werner formulated this amine as `[Pt(NH_(3))_(2).CI_(4)]` (non - electrolyte) .