00:01
You're asked to write the chemical formulas for the compounds that are formed with a combination of ions.
00:06
You don't need to name them.
00:08
So you just recognize that when they combine, they do so to form a neutral compound.
00:13
With rubidium having a plus one charge and chloride having a minus one charge, then you just need one of each of them to get a neutral compound.
00:23
Similarly, ammonium and chloride come together one to one.
00:27
But magnesium having a 2 plus charge requires 2 chlorides.
00:33
Zirconium having a 4 plus charge will require 4 chlorides, each with a 1 minus charge, and gallium having a 3 plus charge will require 3 chlorides.
00:47
Then we have rubidium and pariodate.
00:50
The pariodate just has a minus 1 charge, similar to chloride, so our chemical formulas will be very similar.
00:59
One iodate per ribidium, one per iodate per ammonium, two pariodates per magnesium...