How To Name The Compound TiI4?
Wikipedia calls it "Titanium Tetraiodide", but it's a molecular compound, so aren't prefixes not supposed to be used?
- pisgahchemistLv 710 years agoFavorite Answer
The rules in my classroom and most classrooms are these....
1. Metal-nonmetal or metal-polyatomic ion ==> use the Stock system (includes Roman numeral when necessary
2. Nonmetal-nonmetal ==> Greek prefix method.
Trying to use a system based on how covalent or how ionic are the bonds is a fools errand. The only clear-cut demarcation is this ... Metal-nonmetal, use the Stock system. Nonmetal-nonmetal, use the Greek prefixes. The stair-step line clearly separates metals from nonmetals.
Titanium is clearly a metal and iodine is clearly a nonmetal. Therefore, the name is titanium(IV) iodide. Period.