 Okay, so let's do a different type of nuclear reaction. So remember when we have this coefficient in front, right, we can make two of them, okay? So just to remind ourselves, let's just put another one of these helium-3 atoms there. Can anybody tell me when we have two small nuclei and they get switched together, what type of nuclear reaction is that one? That's a fusion, yeah, very good. So this is like what happens in the sun. So, again, it's the same thing, right? So we're adding up everything here. So we've got the mass number, total mass of 6, total proton number of 4. Remember here, that's another 2, the coefficient. Okay, so if you want to, you can put that there. If it doesn't, you don't have to, okay? So now what do we have? We have 2 and 2. So what are we missing? We're missing 4 and 2. What type of particle is that? That's an alpha particle, right? So 4 and 2 is H, so that's an alpha particle. Okay, so this is a fusion reaction that emits alpha particles. Any questions on this one?