Other inorganic groups may be attached to carbon. Halogens (F, Cl, Br, I) are commonly found in organic compounds. Halogens are named by dropping the "-ine" from the element name and adding "-o", i.e. Chlorine is "chloro", Fluorine is "fluoro". Another group is NO2 = "nitro". These are all located with position numbers. Examples:
CHI3 triiodomethane antiseptic used by veterinarians	Cl-CH2CH2CH3 1-chloropropane	CF2C2 dichlorodifluoro- methane Freon-12, a CFC - chlorofluorcarbon	CH3CH2-NO2 nitroethane used as a drag racing fuel
In some compounds there may be two or more functional groups. If this happens, which functional group is used for the ending in the name? A general rule of thumb is that the more "complicated" functional group is used to determine the ending for the name. More "complicated" means more oxygens or double bonds in comparison to the other functional group. At this time you will not be asked to name compounds of this type but you should be aware of their existence.

Functional Group	Structure	Special Name
Alcohol	-OH	hydroxy
Amine	-NH2	amino
Ketone	=C=O	keto
Ether	-O-CH3	methoxy
Benzene	C6H6	phenyl