Question
Question: Which of the following compounds will not dissolve in aqueous \[NaOH\]? A. contains resonance and it becomes stable and as it is followed in option (B). here option (C) is unstable compound and in option (D) Sulphur has −ve charge which is easily dispersed then it contains stability.
Hence, option (C) is the correct answer.
Note: The stability of a complex particle in solution is determined by the nature of the central atom and the ligands. The most important characteristics of the central atom, determining the stability of the complex compound, are the degree of oxidation the dimensions, and the electronic structure. In the case of complexes with monatomic ligands, stability is dependent on the same characteristics in the ligand.