![]() I'm just going to go over these rules really fast. So I'm going to go through these rules just for the sake of reminding you, but I'm also going to show you that now in organic chemistry we have an easier method to do this based on the new information that you've learned about bonding preferences. ![]() Remember that Lewis structures were ways to describe molecules that everything is drawn explicitly so that means all the bonds, all the lone pairs, all the atoms were drawn out perfectly explicitly so you can see everything on the structure.īack in the day, you learned a set of rules in gen chem that you were supposed to remember about computing theoretical number of valence electrons then subtracting electrons and stuff like that, but if you already have a knowledge of the octet rule and if you already have knowledge of bonding preferences, it turns out that we can do almost all these Lewis structures just on that knowledge.
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