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3 forms of C (carbon)
graphite (2-D network solid)
diamond (3-D network solid)
coke (highly carbonaceous amorphic solid)
Graphite (description of structure)
layered, planar; can be described as a 2-dimensional lattice because covalent bonds occur only within sheets (planes) called graphenes; in each layer C atoms are arranged in a honeycomb-like lattice
Graphenes (layers) are weakly held together by LDFs. As far as LDFs go they are strong because graphene layers are flat and large.
The smallest building block of a crystal, consisting of atoms, ions, or molecules, whose geometric arrangement defines a crystal's characteristic symmetry and whose repetition in space produces a crystal lattice.
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