While drawings like those shown above most clearly show the structural features of organic molecules, it is clear that simpler methods are needed for routine representation of organic structures. The simplest, and least informative, is the simple representation of the molecular formula, showing ratios of atoms a alternative format in which all atoms and all covalent bonds are shown is the line-bond or Kekulee structure. While this does provide information regarding bonding in the molecule, structures of this type are tedious to draw, and organic molecules are more commonly represented using some form of abbreviated condensed structure CHaCH2CHCH3 CH2CH3 HH C6H14 H-C-C-C-C-C-H CH3 CH2CHCH2 CH3 CH3 CH2-CH-CH2-CH3 Line-Bond Molecular Formnla Assorted Condensed Formnlas Kekule A further condensation of structural information is accomplished in line" or structural drawings. In this format, each vertex in the drawing corresponds to a-ch group and each terminal line to a -Ch, group. It is assumed that all carbons have the appropriate number of hydrogens, and these are typically not shown. Multiple bonds are shown in structural drawings as double or triple lines, and it is again understood that the appropriate number of hydrogen atoms are attached CH3 Line or Structural FormulasWhile drawings like those shown above most clearly show the structural features of organic molecules, it is clear that simpler methods are needed for routine representation of organic structures. The simplest, and least informative, is the simple representation of the molecular formula, showing ratios of atoms. A alternative format in which all atoms and all covalent bonds are shown is the "line-bond" or Kekuleé structure. While this does provide information regarding bonding in the molecule, structures of this type are tedious to draw, and organic molecules are more commonly represented using some form of abbreviated "condensed structure". A further condensation of structural information is accomplished in "line" or "structural" drawings. In this format, each vertex in the drawing corresponds to a -CH2- group and each terminal line to a -CH3 group. It is assumed that all carbons have the appropriate number of hydrogens, and these are typically not shown. Multiple bonds are shown in structural drawings as double or triple lines, and it is again understood that the appropriate number of hydrogen atoms are attached