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Nomenclature Rules
| Term | Elements Needed |
|---|---|
| Binary Molecular | 2 Nonmetals Names: Use subscript to determine prefix Mono is never used on the first element Change ending of second element to -ide Formulas: Use prefix to determine subscript |
| Binary Ionic | 1 Metal + 1 Nonmetal Names Metal - stays the same (written first) Nonmetal - change ending to -ide Formulas Write element symbols with charges Criss cross charges to determine subscripts Reduce subscripts to simplest ratio if needed Net charge = 0 |
| Multivalent Ionic | Includes a Transition Metal that has more than one charge Names -Follow previous rules for binary ionic compounds Roman number indicates charge on the metal Use charge on anion to help determine charge on metal Formulas - cross charges |
| Polyatomic Ionic | Includes at least 1 polyatomic ion Names -Follow previous rules for ionic compounds except endings for anions do not change Formulas -Follow ionic compounds Must use parentheses with more than one of the same polyatomic ion is needed |
| Binary Acids | Hydrogen + 1 Nonmetal Names: Hydro ______________ ic Acid Formulas: Follow previous rules for ionic compounds |
| Ternary Acids | Hydrogen + 1 Polyatomic Ion Names: Determine polyatomic ion present - ate ending = __________ ic Acid (I ate something icky) - ite ending = __________ ous Acid (Sprite is delicious) Formulas: Follow previous rules for ionic compounds |