![]() ![]() Yes, just switch the single and double bonds for the above two structures (with the oxygens and their lone electrons). Remember that formal charge is calculated by taking the of valence electrons, minus the lone electrons and the bonds, and we show that charge next to the molecule. In the left resonance structure, all the atoms have zero formal charge, while on the right structure, the nitrogen has a +1 formal charge, and the oxygen with the single bond has a -1 formal charge.Ĭan you draw two additional resonance structures for the above molecules? This chemistry video tutorial explains how to draw lewis structures of molecules and the lewis dot diagram of polyatomic ions. We draw the dot structure in the exact same manner, and then calculate the formal charges for the atoms in the molecule. ![]()
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