Carbon 6 Density Reduction Potential Electronegativity 2.266gcm3 Not Available 2.55 C Boiling Point 1st lonization Energy Electron Configuration 12.011 Not Available 1086.4k/mol [He]2s22p2 Melting Point 2nd lonization Energy Stable Isotopes 3823.2K 2352.6k/mol 12c,13C Heat Capacity 3rd lonization Energy 8.53gK 4620.4k/mol FULLERENE Heat of Atomization Electron Affinity 716.7k/mol 122 kJ/mol DIAMOND GRAPHITE Heat of Vaporization Atomic Radius 710.9k/mol 77.2pm Heat of Fusion lonic Radius Crystal Structure 105 kl/mol 30pm(c4+) Source:http://college.cengage.com/chemistry/discipline/mml3/#tools_0_2 Source: http://college.cengage.com/chemistry/discipline/mml3/#tools_0_2