Three coordination complexes P, Q, and R are subjected to reaction with excess AgNO ₃ solution. Complex P, with empirical formula CoCl ₃ 4 NH ₃ , yields 1 mole of AgCl precipitate per mole of the complex. Complex Q, with empirical formula PtCl ₄ 2 NH ₃ , yields 0 moles of AgCl precipitate per mole of the complex. Complex R, with empirical formula CoCl ₃ 3 en , yields 3 moles of AgCl precipitate per mole of the comple

Step-by-step solution

From the precipitation data, the coordination spheres can be deduced using Werner's theory: For complex P ( CoCl ₃ 4 NH ₃ ), 1 mole of AgCl implies one chloride ion is outside the coordination sphere. The complex is [ Co ( NH ₃)₄ Cl ₂ ] Cl . The complex cation is [ Co ( NH ₃)₄ Cl ₂ ]⁺ (type Ma ₄ b ₂ ). It has cis and trans geometrical isomers, both of which are optically inactive. Total stereoisomers X = 2 . For complex Q ( PtCl ₄ 2 NH ₃ ), 0 moles of AgCl implies all chloride ions are inside the coordination spher