Preferred Label : symmetry number;
Detailed label : symmetry number, s;
IUPAC definition : The symmetry number of a molecule is obtained by imagining all identical atoms to
be labelled, and then counting the number of different but equivalent arrangements
that can be obtained by rotating (but not reflecting) the molecule. In the statistical-mechanical
treatment of chemical equilibrium, the partition function for each molecular species
must be divided by its symmetry number.;
Origin ID : S06214;
See also
The symmetry number of a molecule is obtained by imagining all identical atoms to
be labelled, and then counting the number of different but equivalent arrangements
that can be obtained by rotating (but not reflecting) the molecule. In the statistical-mechanical
treatment of chemical equilibrium, the partition function for each molecular species
must be divided by its symmetry number.
