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Home  arrow Student Resources  arrow Chapter 7: Polyatomic molecules: bonding  arrow Multiple choice questions

Multiple choice questions

Try the following multiple choice questions to test your knowledge of this chapter. For each question there is one correct answer. The periodic table, physical constants and relative atomic masses needed for these problems are given on the inside covers of Chemistry, fourth edition by C.E. Housecroft and E.C. Constable. Once you have answered the questions, click on 'Submit Answers for Grading' to get your results.

If your lecturer has requested that you send your results, please complete the routing information found at the bottom of your graded page and then click on the 'E-Mail Results' button. Please do not forward your results unless your lecturer has specifically requested that you do so.

This activity contains 18 questions.

Question 1.
Resonance structures for PF5 can be drawn so that each atom obeys the octet rule. Consider only resonance structures that are major contributors to the overall bonding in PF5. Which statement is correct?

End of Question 1

Question 2.
Which piece of evidence supports the delocalization of the negative charge in [NO3]?

End of Question 2

Question 3.
Match the hybridization scheme to the carbon atom in each molecule. Which pair is incorrect?

End of Question 3

Question 4.

Look at the structure of the platinum complex in Figure 6.21a. Which hybridization schemes are appropriate for the C atoms in this molecule?

Click here to view Figure 6.21a

End of Question 4

Question 5.
Which of the following compositions corresponds to an sp3 hybrid orbital?

End of Question 5

Question 6.
Match the shape to an appropriate hybridization scheme for the central atom. Which pair is incorrect?

End of Question 6

Question 7.
For which one of the following molecules or ions would an sp2 hybridization scheme be appropriate for the central atom?

End of Question 7

Question 8.
After hybridization of the atomic orbitals of the central atom to accommodate the σ-bonds, in which molecule or ion is there an atomic orbital "left over" which is used in π-bonding?

End of Question 8

Question 9.
Match the formula to a hybridization scheme for carbon. Which pair is incorrect?

End of Question 9

Question 10.
For which one of the following molecules or ions would an sp3 hybridization scheme not be appropriate for the central atom?

End of Question 10

Question 11.
Which statement correctly describes an MO approach to the bonding in CH4? Consider only the valence orbitals of C and H.

End of Question 11

Question 12.
Apply the VSEPR model to predict a structure for OF2, and then suggest a suitable hybridization scheme for the O atom. Which pair below is the correct combination?

End of Question 12

Question 13.
Which hybridization scheme is most appropriate for the central atom in SO3?

End of Question 13

Question 14.
For which one of the following is an sp3 hybridized central atom not appropriate?

End of Question 14

Question 15.
In which one of the following is it not necessary to invoke charge-separated species to describe the bonding in terms of the octet rule?

End of Question 15

Question 16.
In the hydrocarbon CH2=CHCH2CH=CH2:

End of Question 16

Question 17.
The hydrocarbon CH3CH2CH=C=CHCH2CH3:

End of Question 17

Question 18.
In an MO scheme for CH4:

End of Question 18

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