A research team in Singapore studied the properties of nanotubes, which are cylindrical molecules of carbon. Nanotubes conduct electricity along their length. Which structure do nanotubes most closely resemble?

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Question

A research team in Singapore studied the properties of nanotubes, which are cylindrical molecules of carbon. Nanotubes conduct electricity along their length. Which structure do nanotubes most closely resemble?

Accepted Answer

Graphite — Award 1 mark for recognising that nanotubes have a similar structure to graphite sheets rolled into cylinders, with delocalised electrons allowing electrical conductivity. A is incorrect because diamond has no delocalised electrons and does not conduct electricity. C is incorrect because buckminsterfullerene molecules are discrete spheres, not extended structures. D is incorrect because silicon dioxide is a different element compound with no electrical conductivity.

Answer

Silicon dioxide

Answer

Graphite

Answer

Diamond

Answer

Buckminsterfullerene

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