Carbon
Carbon is an organic element which is prevalent in nature and living organisms. The atomic weight of carbon is 12 and its atomic number is 6. Carbon exists naturally as two allotropes namely graphite and diamond. The melting point of carbon is 3652oC and its boiling point is 4827oC. Being that Carbon is the only element that forms strong single covalent bonds to itself, it is an intricate constituent of the biosphere [1][2][3].
Both graphite and diamond consist of carbon atoms alone, but have different structures and bonding which define their physical properties. Diamond being much more strongly bonded than graphite hence their obvious differences.