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Unformatted text preview: Flow Chart for Naming Compounds ( Except Acids ) The charges on -ate and -ite ions : Nitrate and nitrite = NO 3- and NO 2- Chromate = CrO 4 2- Permanganate = MnO 4- Carbonate = CO 3 2- For any others, the charge = the charge associated with the non-oxygen element. Common Ions : Ammonium = NH 4 + Hydroxide = OH- Cyanide = CN- Special case ions : Oxalate = C 2 O 4 2- Acetate = CH 3 COO- Dichromate = Cr 2 O 7 2- Thiosulfate = S 2 O 3 2- Is it ionic or molecular? Name it using the prefixes: 1 = mono- 6 = hexa- 2 = di- 7 = hepta- 3 = tri- 8 = octa- 4 = tetra- 9 = nona- 5 = penta- 10 = deca- Put ide at end of second element molecular The name of the compound is the name of the positive ion followed by the name of the negative ion. No prefixes are needed to tell you how many. First step : determine what is the positive ion and what is the negative ion. The positive ion always comes first, and it will either be NH 4 + or a metal. Whatever comes after the positive ion is the negative ion. Onceor a metal....
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