Question

coal graphite diamond are allotropes of carbon or polymorphs ofcarbon

Answer 1

Carbon is capable of forming many allotrope due to its valency. Well-known forms of carbon include diamond and graphite.

Graphite is one of three forms of crystalline, or crystals forming, carbon.

Carbon also exists in an amorphous, or “shapeless,” form in substances such as coal and charcoal.

Different forms of the same element are called allotropes.
Besides graphite, the other allotrope of crystalline carbon are diamond and fullerenes.

In recent decades many more allotrope are forms of carbon have been
discovered and researched including ball shapes such as.

buckminsterfullerene and sheets such as grapheme.

Larger scale structures of carbon include nano tubes, nano buds and nano ribbons.

Other unusual forms of carbon exist at very high temperatures or extreme pressures.

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Answer 2

Answer:

diamond and graphite are allotropic forms of carbon