Naming compounds

Positive ion
Cation
Negative ion
Anion
How is a cation named?
It is identified simply by the elements name (Example: Na+ is sodium)
How is an anion named?
Drop the ending of the element’s name and add -ide. (Example: Cl is chloride)
How do you identify it as an ionic compound for naming?
If there is a metal present in the compound.
mono
one
di
two
tri
three
tetra
four
penta
five
hexa
six
hepta
seven
octa
eight
nona
nine
deca
ten
How do you know if it is an acid?
It usually has hydrogen as the first element.
Binary Acid
Hydrogen bonded to one of the halogens (fluorine, chlorine, bromine, iodine)
Oxyacid
Acids that contain hydrogen, oxygen, and a third element (usually a nonmetal).
What is the rule when naming an acid if there is only one element bonded to the hydrogen?
Use “hydro” for the hydrogen, then the name of the element hydrogen is bonded to with the ending changed to “-ic”, then the word “acid” (Example: HF is hydrofluoric acid)
When naming an acid, if the group bonded to the hydrogen has a name that ends in “-ite”, what do we change the ending to?
“-ous” (Example: HNO2 ;Hydrogen is bonded to nitrite so the name of this compound would be nitrous acid)
When naming an acid, if the group bonded to the hydrogen has a name that ends in “-ate”, what do we change the ending to?
“-ic” (Example: HClO3 Hydrogen is bonded to chlorate so the name of this compound would be chloric acid)
When naming a compound the second element will change its ending to ____?
-ide (This is only when there are only two elements present – otherwise use your chart to name the polyatomic ion bonded to the first element)
How to name a covalently bonded compound
Name each non-metal with a prefix representing how many of that element are present. If there is only one of the first non-metal then it does not have a prefix.
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