Organic molecular structure

A major advancement in understanding molecular structure, highlighting the arrangement of atoms within compounds using the concept of valence. This system introduced notation: Water would be H—O—H, and carbon dioxide O=C=O, clarifying the organization of organic molecules, resolving many mysteries of organic chemistry.
 August Kekulé Germany 1858 Organic molecular structure

A major advancement in understanding molecular structure, highlighting the arrangement of atoms within compounds using the concept of valence. This system introduced notation: Water would be H—O—H, and carbon dioxide O=C=O, clarifying the organization of organic molecules, resolving many mysteries of organic chemistry.