 So here's your task, I'd like you to draw the Lewis structures and then the VSEPR structure for each of these molecules and ions. You can use wedge dash diagrams, where that's appropriate to show the 3D structure, state the name of the shape and the bond angles that would be in that molecule. Then you can enter them into the little quiz. Lastly, I'd like you to draw a Lewis structure for ammonia and then think carefully about all of the electrons in the structure and predict the shape of this molecule. And that will lead us into the next video.