Carbon (C)
| Atomic Number | 6 |
|---|---|
| Atomic Mass | 12.011 u |
| Category | Polyatomic nonmetal |
| Electron Config | [He] 2s² 2p² |
| Appearance | black (graphite), transparent (diamond) |
| Density (STP) | 2260 g/L |
| Melting Point | 3823 K |
| Boiling Point | 4300 K |
| Electronegativity | 2.55 (Pauling) |
| Ionization Energy | 1086.5 kJ/mol |
| Atomic Radius | 70 pm |
| Crystal Structure | Simple Hexagonal |
| Discovered By | Ancient Egypt (-3750) |
Brief Introduction
Carbon (C) is a fundamental nonmetal element that exists in multiple allotropic forms and is the basis of all known life. It forms more compounds than any other element except hydrogen. Key details about Carbon (C) are as follows:
Uses: Forms diamonds (cutting tools, jewelry), graphite (lubricants, pencils, electrodes), carbon fibers (composites), activated charcoal (filtration, medicine), carbon black (tires, inks), and as the foundation of organic chemistry and biochemistry.
Production/Extraction: Exists naturally as coal, petroleum, natural gas, graphite, and diamonds. Synthetic diamonds produced via high-pressure high-temperature (HPHT) or chemical vapor deposition (CVD). Graphene and carbon nanotubes synthesized for advanced applications.
History: Known since prehistoric times as charcoal, soot, and coal. Recognized as an element by Antoine Lavoisier in 1789. Named from Latin "carbo" meaning coal or charcoal. Diamond and graphite proven to be carbon allotropes in the late 18th century.
Health Effects & Safety: Elemental carbon is generally non-toxic. Carbon monoxide is deadly, carbon dioxide is an asphyxiant, and fine carbon particles can cause respiratory issues. Essential for all life forms.
Price/Market: Varies enormously by form—coal is cheap and abundant, graphite has moderate value, while diamonds and advanced carbon materials (graphene, nanotubes) command premium prices.
Properties: Four valence electrons allow versatile bonding, forms covalent chains and rings, diamond is the hardest natural material, graphite is slippery and conductive, exists in multiple allotropes (diamond, graphite, fullerenes, graphene, nanotubes).
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