00:02
There, in this question, we have an ion with a charge of positive one.
00:12
So what that tells us is that it has lost one electron, because electrons are negatively charged.
00:21
So if you lose an electron, you end up with a positive charge.
00:24
If you gain electrons, since they're negative particles, you end up with a negative charge.
00:29
So since it has a positive charge, that means it's a cation.
00:34
Cations are positive ions, whereas anions are negative ions.
00:39
So since this is positive one or has a charge of positive one it is a cation.
00:45
Alright we want to know the chemical symbol of the noble gas that is isoelectronic with.
00:52
In other words has the same number of electrons.
00:55
Well there are a couple of ways we could do this, answer this.
00:58
One is we could add together the number of electrons here and figure out what element, what noble gas, is represented...