00:01
We are asked to rank the following ions from largest, smallest to largest.
00:09
We are going to be ranking strontium ion, that has a 2 plus charge, the selenium, 2 minus charge, and bromine, 1 minus, rubidium 1 plus.
00:28
So now let's take a look.
00:29
We've got, whoops, we've got rubidium right here and bromine right here.
00:35
Strontium right there and selenium right here.
00:41
So the smallest of these three, or these four, we're going to be looking at these two are going to lose an electron or an energy level, and rubidium loses one electron, strontium loses two electrons.
01:00
So it will be smaller...