1. Nomenclature—Naming Compounds that Only Contain Nonmetals Packet #17

2. Introduction Compounds that only contain nonmetals are named in a way that is somewhat similar to the rules of naming ionic compounds.

3. Rules for Naming Compounds that Contain Only Nonmetals The first element in the formula is named first. The full element name is used The second element is named as though it was an anion. Prefixes are used to denote the number of the atoms present. The prefix mono is never used for the naming of the first element. CO Named carbon monoxide NOT monocarbon monoxide

4. Example I BF 3 First element is boron Second element is named fluoride as though it is an anion Use of prefixes Tri goes with fluoride Boron trifluoride

5. Example Set II NO Nitrogen oxide N 2 O 5 Dinitrogen pentoxide The a in penta was dropped to allow easier pronounciation. CO 2 Carbon dioxide P 4 O 6 Tetraphosphorus hexaoxide

6. Review