1. 330.07.01c.Names & Formulas - Molecules Three Types of Naming Systems: 1.Ionic = Stock System a)include binary (e.g., NaCl) & ternary (e.g., NaNO 3 ) compounds. b)transition metals include Roman numeral for charge (e.g., iron(II) oxide) 2. Molecules = Prefix a) CO 2 = carbon dioxide; CO = carbon monoxide; H 2 O = dihydrogen monoxide 3.Acids = Acids a) Hint: formulas begin with ‘H” (e.g., HCl, HNO 3 ) you are here

2. Prefix System 1mono-6hexa- 2di-7hepta- 3tri-8octa- 4tetra-9nona- 5penta-10deca-

3. Examples CO 2 carbon dioxide (don’t need mono ONLY for cation) CO carbon monoxide N 2 O 4 dinitrogen tetroxide N 2 O 5 dinitrogen pentoxide