Carbon is a chemical element with symbol C and atomic number 6. On the periodic table, it is the first of six elements in column, which have in common the composition of their outer electron shell. Wikipedia
Symbol: C
Atomic mass: 12.0107 u ± 0.0008 u
Atomic number: 6
Electron configuration: [He] 2s22p2
Boiling point: 4,827 °C
Electrons per shell: 2, 4
Discovered: 3750 BC
There are nearly ten million known carbon compounds and an entire branch of chemistry, known as organic chemistry, is devoted to their study. Many carbon compounds are essential for life as we know it. Some of the most common carbon compounds are: carbon dioxide (CO2), carbon monoxide (CO), carbon disulfide (CS2), chloroform (CHCl3), carbon tetrachloride (CCl4), methane (CH4), ethylene (C2H4), acetylene (C2H2), benzene (C6H6), ethyl alcohol (C2H5OH) and acetic acid (CH3COOH).
Estimated Crustal Abundance: 2.00×102 milligrams per kilogram
Estimated Oceanic Abundance: 2.8×101 milligrams per liter
Number of Stable Isotopes: 2
Ionization Energy: 11.260 eV
Oxidation States: +4, +2, -4
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