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  2. Methenium - Wikipedia

    en.wikipedia.org/wiki/Methenium

    Infobox references. In organic chemistry, methenium (also called methylium, carbenium, [2] methyl cation, or protonated methylene) is a cation with the formula CH+. 3. It can be viewed as a methylene radical (:CH. 2) with an added proton (H+. ), or as a methyl radical (• CH. 3) with one electron removed. It is a carbocation and an enium ion ...

  3. Carbon - Wikipedia

    en.wikipedia.org/wiki/Carbon

    Carbon (from Latin carbo 'coal') is a chemical element; it has symbol C and atomic number 6. It is nonmetallic and tetravalent —meaning that its atoms are able to form up to four covalent bonds due to its valence shell exhibiting 4 electrons. It belongs to group 14 of the periodic table. [16]

  4. Fullerene - Wikipedia

    en.wikipedia.org/wiki/Fullerene

    A fullerene is an allotrope of carbon whose molecules consist of carbon atoms connected by single and double bonds so as to form a closed or partially closed mesh, with fused rings of five to seven atoms. The molecules may have hollow sphere - and ellipsoid -like forms, tubes, or other shapes. Fullerenes with a closed mesh topology are ...

  5. Fischer projection - Wikipedia

    en.wikipedia.org/wiki/Fischer_projection

    In an aldose, C1 is the carbon of the aldehyde group; in a ketose, C1 is the carbon closest to the ketone group, which is typically found at C2. [ 3 ] The proper way to view a Fischer projection is to vertically orient the molecule in relation to the carbon chain, have all horizontal bonds point toward the viewer, and orient all vertical bonds ...

  6. Atomic radii of the elements (data page) - Wikipedia

    en.wikipedia.org/wiki/Atomic_radii_of_the...

    The atomic radius of a chemical element is the distance from the center of the nucleus to the outermost shell of an electron. Since the boundary is not a well-defined physical entity, there are various non-equivalent definitions of atomic radius. Depending on the definition, the term may apply only to isolated atoms, or also to atoms in ...

  7. Atomic carbon - Wikipedia

    en.wikipedia.org/wiki/Atomic_carbon

    Atomic carbon, systematically named carbon and λ0-methane, is a colourless gaseous inorganic chemical with the chemical formula C (also written [C]). It is kinetically unstable at ambient temperature and pressure, being removed through autopolymerisation. Atomic carbon is the simplest of the allotropes of carbon, and is also the progenitor of ...

  8. Isotopes of carbon - Wikipedia

    en.wikipedia.org/wiki/Isotopes_of_carbon

    Carbon-11. is a radioactive isotope of carbon that decays to boron-11. This decay mainly occurs due to positron emission, with around 0.19–0.23% of decays instead occurring by electron capture. [6][7] It has a half-life of 20.3402 (53) min. It is produced from nitrogen in a cyclotron by the reaction.

  9. Carbon (company) - Wikipedia

    en.wikipedia.org/wiki/Carbon_(company)

    Carbon, Inc. [1] is a digital manufacturing company that manufactures and develops 3D printers utilizing the Continuous Liquid Interface Production process. The company was founded in 2013, and maintains its headquarters in California , United States.

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