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Home arrow Student Resources arrow Chapter 5: Bonding in polyatomic molecules 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 Appropriate hybridization schemes for the C atoms in molecular CH3CO2H are:
 
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Question 2
2 sp3 hybridization would not be appropriate for the central atom in:
 
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Question 3
3 In the equation for the normalized wavefunction: ψ sp = Nψ2s + Nψ2p, N =
 
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Question 4
4 sp hybridization for the C atom in CS2 is all that is required to allow for:
 
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Question 5
5 In an MO diagram for the formation of H2O in which the z axis bisects the H–O–H angle:
 
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Question 6
6 In monomeric BH3, let an axis definition place the molecule in the xz plane. Which atomic orbital on B is non-bonding?
 
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Question 7
7 Look at Figure 5.19 in Inorganic Chemistry. Which property does each of the e orbitals possess?
 
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Question 8
8 Look at Figure 5.21 in Inorganic Chemistry. Which statement is not true?
 
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Question 9
9 Look at Figures 5.27 and 5.28 in Inorganic Chemistry. Which statement is not true?
 
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Question 10
10 Which statement is true about the bonding in B2H6?
 
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Question 11
11 Look at the representations of the MOs in Figure 5.23 in Inorganic Chemistry. Which statement about these MOs is correct?
 
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Question 12
12 An MO diagram for a model compound XH6 (Oh) can be constructed by considering the interactions between the orbitals of atom X and the LGOs for the Oh H6 fragment. What are the correct symmetry labels for these LGOs?
 
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Question 13
13 The bonding in XH3 can be considered in terms of the interactions between the orbitals of atom X and the LGOs of the H3 fragment. For the LGOs, when X = B, the in-phase combination of H 1s orbitals has a1' symmetry, but when X = N, it has a1 symmetry. This is because:
 
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Question 14
14 The bonding in [NO3]– can be considered in terms of a set of three resonance structures which describe the predominant contributions to the bonding. Which statement is incorrect about this set of resonance structures?
 
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Question 15
15 Figure 5.29 in Inorganic Chemistry gives an MO diagram for the formation of [HF2]–. Which statement is incorrect about this bonding picture?
 
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Question 16
16 Consider an H2S molecule with the z axis bisecting the H-S-H bond angle and the molecule lying in the xz plane. In the construction of an MO diagram for this molecule, the S 3px orbital:
 
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Question 17
17 Appropriate hybridization schemes for the Al atoms in AlCl3 and in Al2Cl6, respectively, are:
 
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Question 18
18 Which of the following reactions is accompanied by a change in hybridization of the central atom?
 
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Question 19
19 In order to describe the bonding in some compounds, it is necessary to invoke 3-centre 2-electron interactions. In which one of the following are such interactions usually invoked?
 
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Question 20
20 Which statement is true about orbitals with t2g symmetry?
 
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