1. Naming Ions and Ionic Compounds What do you think an “oxyanion” would be? Answer: a polyatomic ion composed of an element bonded to one or more oxygen atoms

2. Naming Ions and Ionic Compounds (continued) Oxyanions are named according to the relative number of oxygen atoms: 1.-ate = more O atoms (ClO 3 -1, SO 4 -2, NO 3 -1 ) 2.-ite = fewer O atoms (ClO 2 -1, SO 3 -2, NO 2 -1 ) Halogen oxyanions follow the naming pattern established by chlorine: 1.ClO 4 -1 = perchlorate 3. ClO 2 -1 = chlorite 2.ClO 3 -1 = chlorate 4. ClO -1 = hypochlorite So what is the name of IO 4 -1 ? BrO 3 -1 ?

3. Naming Ions and Ionic Compounds (continued) Refer to Table 8-8, p.227, and the LEFT side of your Naming Compounds Flowchart Cation (metal) + anion (nonmetal) Transition metals have many different oxidation numbers, so you have to specify the oxidation number with a Roman numeral. (EX: FeO = iron (II) oxide; Fe 2 O 3 = iron (III) oxide)

4. Assignments Practice Problems: p.226 (29-33) Study Guide for Content Mastery workbook (pp.46-47: ALL) Also, pp.44-45: 7-9, 19-23 NOTE: Directions at the top of p.47 should refer you to Table 8.6 (p.224), NOT 8.7.