Carbon

Atomic number6
Atomic weight12.011
Discovery (year)Ancient
Atomic radius (A)0.77C0.71
Melting point (oC)3500
Boiling point (oC)4918
Density (g/cm3)2.25
Specific heat (cal/g oC)0.165
Ionization potential (eV)11.26
Electron Affinity (eV)1.268