For 10 points, name this element whose atomic symbol is C.
This element combines with nitrogen to form cyanides, and it combines with iron to make steel. Sixty atoms of this make a molecule of buckminsterfullerene (BUCK-min-ster-FULL-er-een), and another allotrope, mistakenly referred to as lead and used in pencils, is graphite. It exists in all organic molecules. A molecule made of this element and two oxygen atoms is used by plants in photosynthesis. For 10 points, name this element whose atomic symbol is C.
This element combines with nitrogen to form cyanides, and it combines with iron to make steel.
carbon [accept C until mentioned]