c) Treating the following as planar objects, what are the corresponding point groups for each object? d) Two possible isomers of C6H3F3 are 1,2,3-trifluorobenzene and 1,3,5trifluorobenzene. Using a group theoretical analysis, determine if IR spectroscopy could be used to establish which isomer is present in a sample known to contain just one of the isomers