 So the one thing I want you to remember though is on the test you won't have the picture of what you're supposed to be getting Okay, so you can't be relying on that to tell you obviously everybody's can look at it now and say yeah That's all right. You can talk We can we can talk about like what happened at the door or whatever, you know Oh, you always see the people coming and sharpening their pencil, huh? anyways Where were we? Oh, yeah, so You want to be familiar with what these molecular compounds are kind of looking like without that picture in front of you, okay? So let's try let's try and to Okay, so valence electrons of nitrogen. How many are there five? Okay. How did I get that? I looked at the periodic table nitrogen likes to have one lone pair of electrons if it's a Uncharged mall in an uncharged molecule. So what I like to do is just put that lone pair of electrons there And then just put the other three like that Same thing with the other nitrogen It's good to just remember that About nitrogen oxygen and the halogens right so the halogens like to have three lone pairs oxygen sulfur like to have two Nitrogen phosphorous like to have one. Okay, so it goes down three two one so This nitrogen here needs how many electrons? Three this nitrogen here needs how many electrons? Three how many does this one have to donate to this one? It has three to donate to it. Okay? so Notice the type of arrows. I'm drawing. I'm not drawing arrows with two heads two headed arrows like everybody wants to draw Okay Drawing just these what we call fish hook arrows these things Indicate the motion of one electron and of course What's the charge on nitrogen? zero Yeah, the same thing it means the same thing Oxidation state in charge of the same thing the oxidation state for nitrogen in its ionic form is negative 3 if you want to think about it that way Okay We can build a molecule where the oxidation state of nitrogen is going to be different than zero Let's do that. Well, it's not a molecule. It's an ion Yeah Sure. Yeah, I That's why why why am I why am I asking that question because I know you'll mess it up And then you'll be like I know I I know I know you know and then you'll know for the exam when you circle the right answer You know, you know, everybody cool with this. Can I oh one thing one other thing I want to do How many electrons does nitrogen have around it? eight count on Two three four five six seven eight Same thing with this one right one two three four five six seven eight Got it got it got it got it got it got it got it got it got it got it got it got it good questions