Ternary compounds are compounds
that consist of more than two elements.
In naming and writing the formulae for ternary compounds,
we follow rules that are similar to binary compounds.
In this course, you will need to learn some polyatomic ions.
This list of polyatomic cations and anions is accessible
by clicking on the
and find the
icon. Be sure to learn their names, formulae and their charges.
Name the polyatomic anion following the name of the metal.
No Greek prefixes necessary here because the metal charge is either implicitly
or explicitly specified and, therefore, in forming a compound, there is only
one possible combination with the polyatomic anion.
For compounds containing NH4+ cations:
Name the cation first followed by the anion (remember that for simple
anion, the ending is in -ide ).
Let's apply the above rules and name the above
examples. Click on each formula to check the name of each compound.