Structure and bonding of carbon

Medium
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Question 4
Medium

This question is about carbon and its allotropes and compounds.

Fullerenes are molecules of carbon atoms. One type of fullerene is buckminsterfullerene.

a.

What shape is a buckminsterfullerene molecule?

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b.

Give one potential use of buckminsterfullerene.

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c.

Ethyne is a compound of carbon and hydrogen. Figure 1 shows the dot and cross diagram for an ethyne molecule.

Figure 1: Dot and cross diagram of an ethyne molecule

Complete the structural formula of ethyne below by adding the remaining single covalent bonds and hydrogen atoms. Use a line to represent each single bond.

C≡C\text{C} \equiv \text{C}C≡C

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d.

Determine the molecular formula of ethyne. Use Figure 1.

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e.

Ethyne is a gas with a very low boiling point. Why does ethyne have a low boiling point? Select one option:

  • The covalent bonds are strong.
  • The covalent bonds are weak.
  • The intermolecular forces are strong.
  • The intermolecular forces are weak.
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f.

Figure 2 represents the structure of graphene.

Figure 2: The structure of graphene

Explain why graphene is:

  • extremely strong
  • an excellent conductor of electricity.

You should answer in terms of structure and bonding.

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Structure and bonding of carbon Questions

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