Lesson 23: Alchemy of Paint Transition Metal Chemistry Key Question What types of compounds are made from transition metals? Objectives: • • • recognize transition metal compounds determine the charge on transition metal ions Name compounds with transition metals Lesson 23 Notes: a.) Transition metals: • In the middle of the periodic table • Need to have a “middle” name (Roman Numeral) • Ions can have multiple charges • Roman numeral tells which charge is being used Notes (cont’): b.) Charges on Transition Metals • Use charges you know (from the main group elements) and the “rule of zero” to work backwards to find charges on transition elements Iron (III) Oxide Iron (II) Oxide c.) ONLY transition elements need roman numerals!!!! • DO NOT use them for main group elements NaCl = sodium chloride MnCl2 = Manganese (II) chloride Check-in 23: 1. What is the name of the compound, CuO? 2. What is the formula for Zinc (II) chloride?