1. The problem statement, all variables and given/known data Which is an acceptable Lewis structure for Diazomethane? 2. Relevant equations None 3. The attempt at a solution The answer cannot be C or D, as both of these resonance structures are incorrect. I thought the answer was A, given that nitrogen is more electronegative than carbon, which would mean that a negative formal charge is more stable on nitrogen. This is not the case, the answer is actually B.