Carbon Carbon Carbon is a chemical element in the periodic table that has the symbol C and atomic number 6. An abundant nonmetallic, tetra valent element, carbon has several allotropic forms: ...more on Wikipedia about "Carbon"
The carbon cycle is the biogeochemical cycle by which carbon is exchanged between the biosphere, geosphere, hydrosphere and atmosphere of the Earth. (Other bodies may have carbon cycles, but little is known about them.) ...more on Wikipedia about "Carbon cycle"
Carbonaceous is the defining attribute of a substance rich in carbon. Particularly, carbonaceous hydrocarbons are very unsaturated, high- molecular-weight hydrocarbons, having an elevated carbon: hydrogen ratio. ...more on Wikipedia about "Carbonaceous"
Tricarbon or C3 is a small carbon cluster first spectroscopally observed in the beginning 20th century in the tail of a comet by William Huggins. Tricarbon can be found in interstellar pace and can be produced in the laboratory by a process called laser ablation. Small carbon clusters like tricarbon and dicarbon are regarded as soot precursors and are implicated in the formation of certain industrial diamonds and in the formation of fullerenes. The ground state molecular geometry of tricarbon is linear with bond lengths of 129 to 130 picometer corresponding to those of alkenes. The ionization potential is determined eperimentally at 11 to 13.5 electron volt . In contrast to the linear tricarbon molecule the C3+ cation is bent. ...more on Wikipedia about "Tricarbon"
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