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Chemistry (materials)

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I have 3 questions:

1) how might the actual structure of a diamond help explain why it is sometimes found in the form of large, single crystals?

2) what feature of graphite's structure might
account for its usefulness as a lubricant?

3) why are fullerenes powfery as solids rather than composed of large-scale chunks?

  • Chemistry (materials) -

    1) lattic structure of crsytals leads to preferred positions for deposition along planes arranged at particular angles. It also leads to preferred cleavage plaves

    2) graphite crystals are arranged in sheets

    30 Fullerenes have strongly bonded atoms within the soccerball molecule, and have and no polarity, and there fore a very weak attraction for each other. The tend not to stick together and to have a low density because the molecules are hollow

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