Stable isotope Carbon (C)

Isotope Z(p) N(n) Atomic Mass Natural Abundance Enrichment Level Chemical Form
C-13 6 7 13.00335484 1.10% >99.00% Gas

Properties of Carbon

Name Carbon
Symbol C
Atomic number 6
Atomic weight 12.0107
Standard state Solid at 298 °K
CAS Registry ID 7440-44-0 (graphite)
Group in periodic table 14
Group name None
Period in periodic table 2
Block in periodic table p-block
Color Graphite is black; diamond is colorless
Classification Non-metallic
Melting point 3500 °C
Boiling point 4027 °C
Thermal conductivity 140 W/(m·K)
Electrical resistivity About 1000 - direction dependent 10-8 Ω·m
Electronegativity 2.55
Heat of vaporization 715 (sublimation) kJ·mol-1
Heat of fusion 117 (per mole carbon atoms) kJ·mol-1
Density of solid 2.267 g/cm3
Atomic radius 0.77 Å
Electron configuration [He]2s22p2
Oxidation state +4