Chem 111/121 9/29/02
Nomenclature Worksheet 6
Nonmetals combine with nonmetals to make covalent compounds.
Binary compounds contain 2 elements. Their names always end in "ide"
Because nonmetals can have a range of oxidation states, it is necessary to specify the
number of each element in the compound using a prefix like, di-, tri-, tetra-, etc.
The formula is generally written by putting elements in order of increasing group #.
For example: CO carbon monoxide
CO 2 carbon dioxide
Here if a list of prefixes used in Covalent Nomenclature:
1 mono (** not used for the 1 element in a compound**)