What type of structural representation uses lines to indicate bonds?

The line-angle structure, also known as skeletal structure, is a type of representation that uses lines to indicate bonds between atoms. In this form, carbon atoms are represented at the intersections and ends of lines, while hydrogen atoms attached to these carbons are implied rather than explicitly shown. This representation is particularly effective for depicting larger organic molecules in a simplified manner. The use of lines to represent bonds makes it easier to visualize molecular structure and connectivity without overcrowding the diagram with numerous symbols.

While the molecular formula provides information about the types and numbers of atoms in a molecule, it does not convey any information about how those atoms are connected or the shape of the molecule. The condensed formula is a more compact way to express molecular composition but lacks the visual clarity that comes with showing bond connectivity. On the other hand, Lewis structures explicitly show all valence electrons and can be more cluttered, particularly in complex molecules, making the line-angle representation more advantageous for typical organic compounds.