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Home arrow Student Resources arrow Chapter 4: An introduction to molecular symmetry arrow Multiple choice questions

Multiple choice questions

For some of these questions, you need data from the appendices of Inorganic Chemistry, third edition by C.E. Housecroft and A.G. Sharpe. On opening the book cover you will find a periodic table and a list of elements and atomic masses. Physical constants are listed on the back inside cover of the book.

Multiple choice questions by Catherine E. Housecroft.



 This activity contains 20 questions.

Question 1
1 Which of the following does not contain a C3 axis?
 
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Question 2
2 Which of the following symmetry elements does cis-N2F2 contain?
 
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Question 3
3 Which if the following species possesses both C3 and C2 axes?
 
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Question 4
4 Which two species belong to the same point group?
 
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Question 5
5 Which of the following belongs to the C3v point group?
 
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Question 6
6 Which molecule does not have Td symmetry?
 
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Question 7
7 Which molecule or ion has D3h symmetry?
 
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Question 8
8 SO2 belongs to which point group?
 
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Question 9
9 Which of the following molecules or ions possesses a C4 principal axis?
 
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Question 10
10 Which of the following molecules or ions possesses an inversion centre (centre of symmetry)?
 
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Question 11
11 Which of the following molecules or ions belongs to the C4v point group?
 
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Question 12
12 Which statement is true about the change in symmetry on going from BF3 to [BF4]–?
 
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Question 13
13 CO2 has:
 
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Question 14
14 The number of degrees of vibrational freedom possessed by CH4 is:
 
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Question 15
15 Which of the following gives the correct description of the stretching modes of SO3, and how many absorptions do these vibrational modes give rise to in the IR spectrum of SO3?
 
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Question 16
16 The symmetric stretching mode for PCl3 is of A1 symmetry. In the C3v character table, there are z and (x2 + y2, z2) entries in the A1 row. This tells you that:
 
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Question 17
17 The symmetric stretching mode of the SiF4 molecule:
 
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Question 18
18 An Oh XY6 molecule exhibits two T1u, IR active modes. Which statement is true?
 
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Question 19
19 Which pairing of molecule and point group is correct?
 
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Question 20
20 Which pairing of molecule and point group is correct?
 
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