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2 days ago · Carbon is the sixth element, with a ground-state electron configuration of 1s 2 2s 2 2p 2, of which the four outer electrons are valence electrons. Its first four ionisation energies, 1086.5, 2352.6, 4620.5 and 6222.7 kJ/mol, are much higher than those of the heavier group-14 elements.
- Carbon-Based Life
The Lewis structure of a carbon atom, showing its four...
- Amorphous Carbon
Amorphous carbon is free, reactive carbon that has no...
- Allotropes of Carbon
The carbon atoms are in the same locations as the silicon...
- Carbon Cycle
The carbon cycle is that part of the biogeochemical cycle by...
- CNO Cycle
Logarithm of the relative energy output (ε) of proton–proton...
- Carbon-Based Life
2 days ago · Radiocarbon dating helped verify the authenticity of the Dead Sea scrolls. Radiocarbon dating (also referred to as carbon dating or carbon-14 dating) is a method for determining the age of an object containing organic material by using the properties of radiocarbon, a radioactive isotope of carbon . The method was developed in the late 1940s at ...
6 days ago · carbon cycle, in biology, circulation of carbon in various forms through nature. Carbon is a constituent of all organic compounds, many of which are essential to life on Earth. The source of the carbon found in living matter is carbon dioxide (CO 2) in the air or dissolved in water. Algae and terrestrial green plants ( producers) are the chief ...
- The Editors of Encyclopaedia Britannica
May 15, 2024 · A pencil with graphite, the form of carbon that makes up the central core of a pencil. Graphite is used in pencils, lubricants, crucibles, foundry facings, polishes, brushes for electric motors, and cores of nuclear reactors. Its high thermal and electrical conductivity make it a key part of steelmaking, where it is used as electrodes in ...
- The Editors of Encyclopaedia Britannica
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May 15, 2024 · carbon dioxide, (CO 2), a colourless gas having a faint sharp odour and a sour taste. It is one of the most important greenhouse gases linked to global warming, but it is a minor component of Earth’s atmosphere (about 3 volumes in 10,000), formed in combustion of carbon-containing materials, in fermentation, and in respiration of animals and employed by plants in the photosynthesis of ...
May 7, 2024 · Properties of Carbon. Carbon is the sixth element in the periodic table. Its atomic weight is 12.011. Its symbol is C. Its sublimation point 3642 °C. Carbon is a nonmetal. Its atomic number is 6. It belongs to group 14 of the periodic table. It can occur as an atom or as a pure element.
