Skeletal
formula (skeletal structure;
line-angle formula): A representation of
molecular
structure in which
covalent
bonds are shown as lines. The symbols for all elements other
than carbon and hydrogen are always drawn (unless part of a
group
abbreviation such as
Ph).
Carbon atoms can be represented with C, or the C omitted. Hydrogen
atoms can be omitted only when
bonded
to carbon or if part of a
group
abbreviation; all other hydrogens must be shown as H.
Lone
pairs, where present, do not have to shown.
