# Point Groups 1 (Worksheet)


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Work in groups on these problems. You should try to answer the questions without referring to your textbook. If you get stuck, try asking another group for help.

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

1. Using the alphabet above, answer the following:

1. how many letters have a mirror plane?
2. how many letters have more than one mirror plane?
3. how many letters have a rotational axis?
4. which letter has the highest ordered rotational axis?
5. which letters have an inversion center?

2. Determine all of the symmetry elements in each of the following:

 your left shoe eclipsed ethane $$Fe(CO)_5$$ $$CHF_3$$ $$CF_2H_2$$ $$CFH_3$$ $$IBr_4^+$$ $$COS$$ $$IBr_4^-$$ $$SO_2$$ $$HF$$ $$F_2$$ $$BFCl_2$$ $$BFClBr$$ $$CoCl_3(OH_2)^-$$ (excluding hydrogens) $$Cu(CN)_3$$ (planar)

3. Determine the point group for each of the following:(point group flow chart)

 $$SF_6$$​ eclipsed ethane $$CH_4$$ $$CHF_3$$ $$CF_2H_2$$ $$CFH_3$$ $$IBr_4^+$$ $$COS$$ $$IBr_4^-$$ $$SO_2$$ $$HF$$ $$F_2$$ $$BFCl_2$$ $$BFClBr$$ $$CoCl_3(OH_2)^-$$ (excluding hydrogens) $$Cu(CN)_3$$ (planar) $$Ni(CO)_4$$ $$Fe(CO)_5$$ your left shoe a round doorknob

## Contributors and Attributions

Point Groups 1 (Worksheet) is shared under a not declared license and was authored, remixed, and/or curated by Mark Draganjac.