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Carbon, 6C
Graphite (left) and diamond (right), two allotropes of carbon
Carbon
Allotropesgraphite, diamond and more (see Allotropes of carbon)
Appearance
  • graphite: black, metallic-looking
  • diamond: clear
Standard atomic weight Ar°(C)
Carbon in the periodic table
Hydrogen Helium
Lithium Beryllium Boron Carbon Nitrogen Oxygen Fluorine Neon
Sodium Magnesium Aluminium Silicon Phosphorus Sulfur Chlorine Argon
Potassium Calcium Scandium Titanium Vanadium Chromium Manganese Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton
Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Palladium Silver Cadmium Indium Tin Antimony Tellurium Iodine Xenon
Caesium Barium Lanthanum Cerium Praseodymium Neodymium Promethium Samarium Europium Gadolinium Terbium Dysprosium Holmium Erbium Thulium Ytterbium Lutetium Hafnium Tantalum Tungsten Rhenium Osmium Iridium Platinum Gold Mercury (element) Thallium Lead Bismuth Polonium Astatine Radon
Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium Americium Curium Berkelium Californium Einsteinium Fermium Mendelevium Nobelium Lawrencium Rutherfordium Dubnium Seaborgium Bohrium Hassium Meitnerium Darmstadtium Roentgenium Copernicium Nihonium Flerovium Moscovium Livermorium Tennessine Oganesson


C

Si
boroncarbonnitrogen
Atomic number (Z)6
Groupgroup 14 (carbon group)
Periodperiod 2
Block  p-block
Electron configuration[He] 2s2 2p2
Electrons per shell2, 4
Physical properties
Phase at STPsolid
Sublimation point3915 K ​(3642 °C, ​6588 °F)
Density (near r.t.)amorphous: 1.8–2.1 g/cm3[1]
graphite: 2.267 g/cm3
diamond: 3.515 g/cm3
Triple point4600 K, ​10,800 kPa[2][3]
Heat of fusiongraphite: 117 kJ/mol
Molar heat capacitygraphite: 8.517 J/(mol·K)
diamond: 6.155 J/(mol·K)
Atomic properties
Oxidation statescommon: −4, +4
−3,[11] −2,[11] −1,[11] 0, +1,[11] +2,[11] +3[11]
ElectronegativityPauling scale: 2.55
Ionization energies
  • 1st: 1086.5 kJ/mol
  • 2nd: 2352.6 kJ/mol
  • 3rd: 4620.5 kJ/mol
  • (more)
Covalent radiussp3: 77 pm
sp2: 73 pm
sp: 69 pm
Van der Waals radius170 pm
Color lines in a spectral range
Spectral lines of carbon
Other properties
Natural occurrenceprimordial
Crystal structuregraphite: ​simple hexagonal
Simple hexagonal crystal structure for graphite: carbon

(black)
Crystal structurediamond: ​face-centered diamond-cubic
Diamond cubic crystal structure for diamond: carbon

(clear)
Thermal expansiondiamond: 0.8 µm/(m⋅K) (at 25 °C)[6]
Thermal conductivitygraphite: 119–165 W/(m⋅K)
diamond: 900–2300 W/(m⋅K)
Electrical resistivitygraphite: 7.837 µΩ⋅m[5]
Magnetic orderingdiamagnetic[4]
Molar magnetic susceptibilitydiamond: −5.9×10−6 cm3/mol[7]
Young's modulusdiamond: 1050 GPa[6]
Shear modulusdiamond: 478 GPa[6]
Bulk modulusdiamond: 442 GPa[6]
Speed of sound thin roddiamond: 18,350 m/s (at 20 °C)
Poisson ratiodiamond: 0.1[6]
Mohs hardnessgraphite: 1–2
diamond: 10
CAS Number
  • atomic carbon: 7440-44-0
  • graphite: 7782-42-5
  • diamond: 7782-40-3
History
Antoine Lavoisier[8] (1789)
Isotopes of carbon
Main isotopes Decay
abun­dance half-life (t1/2) mode pro­duct
11C synth 20.34 min β+ 11B
12C 98.9% stable
13C 1.06% stable
14C 1 ppt (11012) 5.70×103 y β 14N
 Category: Carbon
| references
Carbon, 6C
Graphite (left) and diamond (right), two allotropes of carbon
Carbon
Allotropesgraphite, diamond and more (see Allotropes of carbon)
Appearance
  • graphite: black, metallic-looking
  • diamond: clear
Standard atomic weight Ar°(C)
Carbon in the periodic table
Hydrogen Helium
Lithium Beryllium Boron Carbon Nitrogen Oxygen Fluorine Neon
Sodium Magnesium Aluminium Silicon Phosphorus Sulfur Chlorine Argon
Potassium Calcium Scandium Titanium Vanadium Chromium Manganese Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton
Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Palladium Silver Cadmium Indium Tin Antimony Tellurium Iodine Xenon
Caesium Barium Lanthanum Cerium Praseodymium Neodymium Promethium Samarium Europium Gadolinium Terbium Dysprosium Holmium Erbium Thulium Ytterbium Lutetium Hafnium Tantalum Tungsten Rhenium Osmium Iridium Platinum Gold Mercury (element) Thallium Lead Bismuth Polonium Astatine Radon
Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium Americium Curium Berkelium Californium Einsteinium Fermium Mendelevium Nobelium Lawrencium Rutherfordium Dubnium Seaborgium Bohrium Hassium Meitnerium Darmstadtium Roentgenium Copernicium Nihonium Flerovium Moscovium Livermorium Tennessine Oganesson


C

Si
boroncarbonnitrogen
Atomic number (Z)6
Groupgroup 14 (carbon group)
Periodperiod 2
Block  p-block
Electron configuration[He] 2s2 2p2
Electrons per shell2, 4
Physical properties
Phase at STPsolid
Sublimation point3915 K ​(3642 °C, ​6588 °F)
Density (near r.t.)amorphous: 1.8–2.1 g/cm3[1]
graphite: 2.267 g/cm3
diamond: 3.515 g/cm3
Triple point4600 K, ​10,800 kPa[2][3]
Heat of fusiongraphite: 117 kJ/mol
Molar heat capacitygraphite: 8.517 J/(mol·K)
diamond: 6.155 J/(mol·K)
Atomic properties
Oxidation statescommon: −4, +4
−3,[11] −2,[11] −1,[11] 0, +1,[11] +2,[11] +3[11]
ElectronegativityPauling scale: 2.55
Ionization energies
  • 1st: 1086.5 kJ/mol
  • 2nd: 2352.6 kJ/mol
  • 3rd: 4620.5 kJ/mol
  • (more)
Covalent radiussp3: 77 pm
sp2: 73 pm
sp: 69 pm
Van der Waals radius170 pm
Color lines in a spectral range
Spectral lines of carbon
Other properties
Natural occurrenceprimordial
Crystal structuregraphite: ​simple hexagonal
Simple hexagonal crystal structure for graphite: carbon

(black)
Crystal structurediamond: ​face-centered diamond-cubic
Diamond cubic crystal structure for diamond: carbon

(clear)
Thermal expansiondiamond: 0.8 µm/(m⋅K) (at 25 °C)[6]
Thermal conductivitygraphite: 119–165 W/(m⋅K)
diamond: 900–2300 W/(m⋅K)
Electrical resistivitygraphite: 7.837 µΩ⋅m[5]
Magnetic orderingdiamagnetic[4]
Molar magnetic susceptibilitydiamond: −5.9×10−6 cm3/mol[7]
Young's modulusdiamond: 1050 GPa[6]
Shear modulusdiamond: 478 GPa[6]
Bulk modulusdiamond: 442 GPa[6]
Speed of sound thin roddiamond: 18,350 m/s (at 20 °C)
Poisson ratiodiamond: 0.1[6]
Mohs hardnessgraphite: 1–2
diamond: 10
CAS Number
  • atomic carbon: 7440-44-0
  • graphite: 7782-42-5
  • diamond: 7782-40-3
History
Antoine Lavoisier[8] (1789)
Isotopes of carbon
Main isotopes Decay
abun­dance half-life (t1/2) mode pro­duct
11C synth 20.34 min β+ 11B
12C 98.9% stable
13C 1.06% stable
14C 1 ppt (11012) 5.70×103 y β 14N
 Category: Carbon
| references

References

  1. ^ Lide, D. R., ed. (2005). CRC Handbook of Chemistry and Physics (86th ed.). Boca Raton (FL): CRC Press. ISBN 0-8493-0486-5.
  2. ^ Haaland, D (1976). "Graphite-liquid-vapor triple point pressure and the density of liquid carbon". Carbon. 14 (6): 357–361. doi:10.1016/0008-6223(76)90010-5.
  3. ^ Savvatimskiy, A (2005). "Measurements of the melting point of graphite and the properties of liquid carbon (a review for 1963–2003)". Carbon. 43 (6): 1115–1142. doi:10.1016/j.carbon.2004.12.027.
  4. ^ Magnetic susceptibility of the elements and inorganic compounds, in Handbook of Chemistry and Physics 81st edition, CRC press.
  5. ^ "Material Properties- Misc Materials". www.nde-ed.org. Retrieved 12 November 2016.
  6. ^ a b c d e Properties of diamond, Ioffe Institute Database
  7. ^ Weast, Robert (1984). CRC, Handbook of Chemistry and Physics. Boca Raton, Florida: Chemical Rubber Company Publishing. pp. E110. ISBN 978-0-8493-0464-4.
  8. ^ Senese, Fred (2000-09-09). "Who discovered carbon?". Frostburg State University. Retrieved 2007-11-24.
  9. ^ "Standard Atomic Weights: Carbon". CIAAW. 2009.
  10. ^ a b Prohaska, Thomas; Irrgeher, Johanna; Benefield, Jacqueline; Böhlke, John K.; Chesson, Lesley A.; Coplen, Tyler B.; Ding, Tiping; Dunn, Philip J. H.; Gröning, Manfred; Holden, Norman E.; Meijer, Harro A. J. (2022-05-04). "Standard atomic weights of the elements 2021 (IUPAC Technical Report)". Pure and Applied Chemistry. doi:10.1515/pac-2019-0603. ISSN 1365-3075.
  11. ^ a b c d e f g h i j k l Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. p. 28. ISBN 978-0-08-037941-8.
  12. ^ "Standard Atomic Weights: Carbon". CIAAW. 2009.