The discussion centers around the IUPAC naming of various chemical compounds. CuCl is identified as copper(I) chloride, while PbI is referred to as plumbic iodide, confirming that "plumbic" refers to lead. NH4ClO is debated, with participants suggesting it could be ammonium hypochlorite or ammonium perchlorate. SnH4 is clarified as stannane, with some confusion over its naming, as it is also referred to as tetrahydride of tin. KMnO4 is correctly identified as potassium permanganate. The conversation highlights the importance of understanding oxidation states and the use of Latinized names in chemical nomenclature, particularly for elements with multiple oxidation states. Participants reference the naming conventions for anionic radicals, specifically noting the distinctions between hypochlorite and perchlorate. Overall, the thread emphasizes the nuances of chemical nomenclature and the need for clarity in naming conventions.