Department of Chemistry
and Physics
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Department of Chemistry and Physics |
| Worksheets |
Symmetry and Point Groups
2
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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:
a) how many letters have a mirror plane?
b) how many letters have more than one mirror plane?
c) how many letters have a rotational axis?
d) which letter has the highest ordered rotational axis?
e) 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 | CHF3 |
| CF2H2 | CFH3 |
| IBr4+ | COS |
| IBr4- | SO2 |
| HF | F2 |
| BFCl2 | BFClBr |
| CoCl3(OH2)- (excluding hydrogens) | Cu(CN)3 (planar) |
3. Determine the point group for each of the following:(point
group flow chart)
| SF6 | eclipsed ethane |
| CH4 | CHF3 |
| CF2H2 | CFH3 |
| IBr4+ | COS |
| IBr4- | SO2 |
| HF | F2 |
| BFCl2 | BFClBr |
| CoCl3(OH2)- (excluding hydrogens) | Cu(CN)3 (planar) |
| Ni(CO)4 | Fe(CO)5 |
| your left shoe | a round doorknob |