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Carbon is known to form almost ten million different compounds, a large majority of all chemical compounds.

Graphite is much more reactive than diamond at standard conditions, despite being more thermodynamically stable, as its delocalised pi system is much more vulnerable to attack.

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It is the second most abundant element in the human body by mass (about 18.5%) after oxygen.

The physical properties of carbon vary widely with the allotropic form.

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"coal") is a chemical element with symbol C and atomic number 6.