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Naming Ionic Compounds with Transition Metals Transition Metals: Metals found in the D-block on the periodic table Get their name because most have more than 1 oxidation state, unlike the metals in S and P blocks, which only have 1. Most have 2 or more oxidation states that they transition in and out of: Fe+2 and Fe+3 Common Oxidation Numbers for Transition Metals: Writing Compounds from the Name with Transition Metals: 1. Write out the ions and their charges for each element (the ion symbols) The charge for the transition metal is represented by a roman numeral. Ex: Silver (I) nitride Silver = Ag+1 2. Drop the signs The + and - 3. Swap the numbers The number for the charge of the nonmetal goes to the metal The number for the charge of the metal goes to the nonmetal 4. Simplify if needed Copper (III) Nitride Cu+3 N-3 Cu3N3 CuN Let’s Practice: Name: Metal Symbol and charge Nonmetal symbol and charge Compound Does it need to be simplified Simplified compound Iron (III) Oxide Fe+3 O-2 Fe2O3 No N/A Molybdenum (II) Phosphide Vanadium (I) Sulfide Chromium (IV) Chloride Silver (I) Sulfide Rules for naming ionic compounds with transition metals: 1. The name of the metal ALWAYS comes first: The metal’s name is as it is on the periodic table Identify the metals charge with Roman Numerals 2. The name of the nonmetal ALWAYS comes second. Change the ending of the nonmetal to “ide” 3. Unswap and Undrop Bring the subscripts back up to the opposite element (the elements should now have their actual oxidation number) Double check the nonmetals (anions) oxidation number to make sure it is what it is supposed to be. FeCl3 Fe+3 Cl-1 Iron (III) chloride Naming transition metals: 1. 2. 3. 4. Name the metal Name the nonmetal Unswap and Undrop Check the oxidation number FeO Fe+1 O-1 Oxygen’s oxidation number is -2. 5. 6. Multiply to get Oxygen to it’s -2 oxidation number - multiply both Fe and O by 2 to get: Fe+2 and O-2 Now name it: Iron (II) Oxide What is Oxygen’s oxidation number? Let’s Practice: Compound: Ag3N MnN CrI6 Ti3N4 Hg2O PtS2 Metals symbol and original oxidation number Ag+1 Nonmetals symbol and original oxidation number N-3 Is the nonmetal oxidation number correct? Yes Name of the compound Silver (I) Nitride