00:01
This question asks us to determine the ionic charge on each of the atoms that make up our ionic compounds.
00:07
So looking at the periodic table, we're able to assign charges based on the group that our atoms are in.
00:15
So lithium is in group one, and oxygen is in group 16.
00:19
So we know that we're going to have l -i -plus and o2 -minus.
00:26
And this makes sense that we would have two lithium atoms for every one oxygen.
00:30
Atom because that would cancel out the charges.
00:33
And so this would be called lithium oxide.
00:40
Our next one is going to be calcium and sulfur.
00:45
And so calcium is in group two and sulfur.
00:48
And sulfur is in group 16.
00:49
So we would see ca2 plus and s2 minus.
00:54
And that's going to be calcium, sulfide...