Symbol: C Atomic mass: 12.011 u Atomic number: 6 Electrons per shell: 2, 4 Electron configuration: [He] 2s22p2 Melting point: 6,422°F (3,550°C) CAS ID: 7440-44-0 Known since ancient times, A.L. Lavoisier proposed carbon in 1789 from the Latin carbo meaning "charcoal." A.G. Werner and D.L.G. Harsten proposed graphite from the Greek grafo meaning "to write," referring to pencils, which were introduced in 1594.

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