Draw the resonance structures of $N_2O_4$,state its shape,and indicate the bond angles and bond lengths.

(N/A) The $N_2O_4$ (dinitrogen tetroxide) molecule is planar with $D_{2h}$ symmetry.
Its resonance structures involve the delocalization of electrons across the $N-N$ bond and the $N-O$ bonds.
In the resonance hybrid,the $N-N$ bond length is approximately $1.75 \ \mathring{A}$,and the $N-O$ bond length is approximately $1.19 \ \mathring{A}$.
The bond angle $\angle O-N-O$ is approximately $135^{\circ}$ and $\angle N-N-O$ is approximately $112.5^{\circ}$.
The molecule is planar,meaning all atoms lie in the same plane.