The correct IUPAC name of \([ \text{Pt}(\text{NH}_3)_2\text{Cl}_2 ]^{2+} \) is:
Diamminedichloridoplatinate (IV)
Step 1: Understanding the IUPAC name. For this compound, platinum is in the +2 oxidation state. The attached ligands are ammonia (NH_3) and chloride (Cl^-). The IUPAC nomenclature is determined by the platinum ion's oxidation state and its associated ligands.
Step 2: Conclusion. Consequently, the correct IUPAC name is Diamminedichloridoplatinum (II), aligning with option (A).
(i) Write two postulates of Werner's coordination theory.
(ii) Draw the geometrical isomers of [(NH_3)_3(NO_2)_3] and give their structures.