00:01
To identify a compound as an ionic compound, we look for a few things.
00:11
We look for a compound that contains a metal and a non -metal, or we look for a compound that contains one or more polyatomic ions.
00:29
Certain polyatomic ions you should have memorized.
00:34
So in the list that they've given us, we have al, which is a metal, combined with cl3, a non -metal.
00:44
The metals are in the middle to lower left of the periodic table, and the non -metals are in the upper right -hand corner.
00:54
So this is an ionic compound.
00:57
Then we have al, a metal, and o3, a non -metal.
01:05
Oxygen is a non -metal, so this is also an ionic compound.
01:10
And then we have nh4cl.
01:14
These are all non -metals, but ammonium is a polyatomic ion, so this is also ionic because of the presence of a polyatomic ion...
