. Which of the following is the purest form of carbon

A: charcoal

B: coal

C: diamond

D: none of these


Best Answer


Carbon, due its valency and catenation properties, exists in a lot of forms or allotropes. 

Some of the known forms or allotropes of carbon are graphite, diamond, graphene and buckminsterfullerene.

Fullerenes are the purest form of carbon since they have a smooth and spherical structure without any dangling bonds present on its surface.

It is also because of the presence of single and double bonds throughout the fullerene surface that there are no bonds on the surface that may attract or be attracted to other atoms.

The spherical form also decreases the surface area for attack or contact and hence supports its purity.

Final Answer: 

The correct option is D: none of these because the purest form of carbon is fullerene.


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