Allotropes of carbon

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  • Created by: Lucía
  • Created on: 08-02-14 08:59

1. What is the structure of a fullerene?

  • Three covalent bonds, without a free electron
  • Four covalent bonds
  • Three covalent bonds with a free electron
  • Five covalent bonds and a free electron
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2. Nanoparticles are generally..

  • 150 nanometres across, where a nanometre is 10^-9
  • 100 nanometres across, where a nanometre is 10^-9 m
  • 50 nanometres across, where a nanometre is 10^-9
  • 100 nanometres across, where a nanometre is 10^-10

3. Why is diamond a good thermal conductor?

  • Vibrations travel easily through the lattice.
  • It has a delocalised electron
  • The stiff lattice

4. How are the sheets bonded together in graphite?

  • The atoms are attracted to the delocalised electron
  • By van der Waals forces
  • By permanent dipole- dipole forces
  • By hydrophobic interactions

5. Which type of bonding do they have?

  • Covalent bonds
  • There are no bonds
  • Metallic bonds
  • Ionic bonds

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