Point Groups 1 (Worksheet)
- Page ID
- 11075
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Name: ______________________________
Section: _____________________________
Student ID#:__________________________
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:
- how many letters have a mirror plane?
- how many letters have more than one mirror plane?
- how many letters have a rotational axis?
- which letter has the highest ordered rotational axis?
- 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 |