Which of the following does not depict properties of fullerenes?

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$C_{60}$ is called Buckminster fullerene.

Fullerenes have open cage structure like ice

Fullerenes are made by heating graphite

Fullerenes are pure forms of carbon

answer is B.

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Detailed Solution

Carbon allotropes are fullerenes. They look like cages and are shaped like footballs or soccer balls. They only have carbon atoms in them. They are free of impurities. In fullerene carbon atoms are in sp² hybridization fullerenes are prepared by heating graphite in an electric arc. A fullerene has a closed structure like a football or soccer ball. A fullerene with 60 carbon atoms is called Buck minster fullerene and is of great importance. We use an electric arc to heat graphite to prepare fullerenes. Helium or argon-based inert gas environment is what we offer. To prepare fullerenes, we can also use a laser to vaporize graphite.
Diamond, graphite, and fullerenes are carbon-only compounds. They are all forms of carbon. They only have carbon atoms in them. They are free of impurities.

Thus fullerene does not have an open structure.

Hence, option B is correct.