How to draw polyatomic 3d vsepr shapes How do I draw 3d polyatomic vsepr shapes? I'm talking about stuff like CH2O or N2H3F, those kind of things. We've never been thought in class how to draw such complex things, and yet it was in our test. I've managed to draw CH2O - it's a trigonal planar, but i'm stuck on N2H3F. I've managed to draw out a structure which was trigonal bipyramidal, but it violates the octect rule. Plz show me a trick to how to draw these stuff Also, how do I determine if the compound is polar covalent or not? I would usually subtract the electronegativity from each other, but having so many atoms, I would be in the negatives. Thank you! [url=http://imgur.com/Vrm8qji]Is this correct?[/url]