 So let's do this one. So notice here we've got a charge, right? So what does that tell you? The number of protons and the number of electrons are not the same, right? Everybody okay with that? Okay, so let's attempt to figure all this stuff out Okay, name protons, neutrons, electrons just by looking at this symbol. Is everybody okay with that? So what would we call this at? So this one's called carbon-13. What would this one be called? Beryllium 9. In this thing would be what? 4. Well, there's not a 4 written up here. How'd you figure that out? Yeah. Atomic number. Atomic number. Look at the periodic table. The atomic number is the same as the number of protons. So in other words, we could say what's the symbol for atomic number C, right? So big C also equals 4. Or if we wanted to put that somewhere on the elemental symbol here, we would have a different color. It would be there that we would see. Okay, so the number of neutrons, 5, right? Because 9 minus 4 is the number of electrons. Okay, so that's a weird one, right? Because we thought normally the number of electrons and the number of protons are equivalent, right? But in this case, this has a positive 2 charge. So that means it's missing 2 electrons. Is everybody okay with that? Obviously you guys aren't since you told me 2 before. So it should have 4 electrons, but since that's a plus 2 charge, plus 2 means minus 2 electrons. So the number of electrons is going to be 2. Is everybody okay with that? I don't know if we could ask any more questions about that.