## Chemistry and Chemical Reactivity (9th Edition)

18 valence electrons: $\begin{smallmatrix} H&-&\ddot{O}&-&\ddot{N}&=&\ddot{O}\\ &&\ddot{}&&&&\ddot{} \end{smallmatrix}$ No ressonance structure possible. All atoms have 0 formal charge since their number of bonds is equal to the number of electrons required for the octect.