(D) $HNO_2$ (nitrous acid) does not contain a coordinate bond. The structure of $HNO_2$ is $H-O-N=O$,where all bonds are covalent. In contrast,$SO_2

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(D) $HNO_2$ (nitrous acid) does not contain a coordinate bond. The structure of $HNO_2$ is $H-O-N=O$,where all bonds are covalent. In contrast,$SO_2$ $(O=S \leftarrow O)$,$HNO_3$ $(H-O-N(=O) \leftarrow O)$,and $H_2SO_3$ ($H-O-S(=O)-O-H$ with a coordinate bond from $S$ to $O$) all contain coordinate bonds.