 Okay, let's do the mechanism for this one, the electrophilic addition of bromine to styrene here. So you can see, just make the diaphragm right here, we've got a styrene because we're going to make a stereocentron there, so it would be, of course, you can also write it like this, plus an anterior strain. So let's just go ahead and add VR2 to this thing. Remember the Lewis structure for VR2? Okay, so you've got the double bond here and VR2, so you can have this electrophilic addition. So remember, well, the double bond here essentially is the nucleophile. So it's going to attack that VR there, and that's going to make that VR-VR bond break. And then, of course, this is a three-arrow mechanism, so as this developing positive charge here develops, that VR is so big that it just attacks that double bond from the other side as well. So we've now brominated styrene, so you can draw it either way, back or forward. So, okay, so notice I'm putting that wedge on the one, but not on the other, because of course you've got the two hydrogens here. So that's not a stereocenter. You've also got the bromine, the bromide ion still. I'm glad somebody else came. It gives me somebody to talk to, somebody else to talk to at least. And then, of course, there's this positive charge that is on this bromine, so you can imagine there's going to be, both of these carbons are going to have this developing positive charge because of the non-bombing resonance form. And so what's going to happen here is this bromine here is going to attack that, well, developing carbocation or the carbon bromine bond or the carbon with the bromine bond to it. We do that. So remember, this is a SN2 reaction. So after we do that, we still got this bromine connected here, and we gain those two electrons. I'm not going to show those hydrogens, because of course they're implied. And this came from the backside of that, so we'll back VR. Okay? So again, here you would actually make both of the enantiomers of this intermediate. So, of course, when you have the VR minus here and it attacked like that, you would get the enantiomers here of this guy. And of course you don't have to draw both of these, you could just put enantiomers. I'm just drawing this one because at the beginning we showed this one. So, here's your electrical condition and then of course your SN2 reaction. So, are there any questions on that one? No questions? Makes sense though, huh? Total sense.