 Okay, so how do we do this? We're going to use molecular, our molecular orbital theory to figure out whether this molecule AG2 exists, okay? So how did we show to do it before, right? What did we say? We say, well, we've got a helium atom, and in its valence shell is only the n equals one level. So one s, and if we look up at helium, right? How many electrons does it have in its one s orbital? Two, right? Okay, so it's drawn in one s orbital, draws two electrons, is everybody okay with this part? Let's go over here, draw the other one s orbital for the other helium atom, it's got two in it as well. Okay, so now what are we going to do? We're going to draw the bonding orbital and draw the anti-bonding orbital, okay? The bonding orbital we call the what? Sigma one s orbital, very good guess. The anti-bonding orbital, what do we call that? Sigma star one s, very good, this is awesome. Okay, so remember, what did we say? If the bond order says that the, or if the bond order we calculate is more than zero then the molecule exists, okay? So remember, well let's fill this thing up first, okay? So how do we fill this up? The first two go down here, right? So how many electrons do we have altogether? Two, four, right? So down to this orbital only two could go, right? So one, two, and we have to put the other two up here. Is everybody okay with that? One, two, okay? So would you guys predict this molecule exists or not? No, yeah, it doesn't exist. Why? If the bond order is one half the bonding electrons minus the anti-bonding electrons, right? So what do we have? One half times two minus two. So what is that? One half times zero, so that equals zero, right? So how many bonds are between these two delimits? Zero, so does this molecule exist? Does not exist, okay? So this molecule, so are you okay with doing something like that? So these are the kind of simpler ones. Any questions on this one before we kill?