# carbon

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boron${\displaystyle \longleftarrow }$ 6 ${\displaystyle \longrightarrow }$nitrogen

## Noun

Carbon's place on the periodic table
The electron shell diagram for carbon
1. (uncountable) The chemical element (symbol C) with an atomic number of 6.
2. (countable); (informal) A piece of carbon paper.
Make sure the carbon is facing the second sheet of paper, before rolling it into the typewriter.
3. (countable); (informal) A carbon copy.
4. A fossil fuel that is made of impure carbon, such as coal or charcoal.
5. (uncountable); (ecology) Carbon dioxide, when talking about global warming and climate change.
Carbon dioxide makes up less than 1% of the atmosphere.