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Graphene is

  By GK Planet Team      
Q. Graphene is
  1. An alloy of carbon
  2. Nanostructure of carbon
  3. Isotope of carbon
  4. None of the above
Answer: Nano-structure of carbon.

Graphene is a semimetal with small overlap between the valence and the conduction bands (zero bandgap material). It is an allotrope(form) of carbon consisting of a single layer of carbon atoms arranged in a hexagonal lattice. It is the basic structural element of many other allotropes of carbon, such as graphite, diamond, charcoal, carbon nanotubes and fullerenes.

It can be considered as an indefinitely large aromatic molecule, the ultimate case of the family of flat polycyclic aromatic hydrocarbons.

Graphene has many uncommon properties. It is the strongest material ever tested, conducts heat and electricity efficiently, and is nearly transparent[citation needed]. Graphene shows a large and nonlinear diamagnetism, greater than that of graphite, and can be levitated by neodymium magnets.
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