Question

which are crystalline form of coal(carbon)???
and how??​

Answer 1

Explanation:

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

Answer 2

Graphite is one of three forms of crystalline, or crystal-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 allotropes of crystalline carbon are diamond and fullerenes.