Inorganic chemistry

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Inorganic chemistry is the branch of chemistry concerned with the study of molecules that contain any combination of chemical elements except for organic compounds. Major branches include:

Some important inorganic products are silicon chips, transistors, LCD screens, and fiber optics.

Inorganic chemistry often overlaps with analytical chemistry, environmental chemistry, physical chemistry, and Organometallic chemistry. Organometallic chemistry combines of organic chemistry with inorganic chemistry, and is partially characterized by the study of metal-carbon bonds, in which the carbon, apart from the metal-carbon bond, would otherwise be considered a part of an organic compound. Vitamin B12, whose active site is similar to that of hemoglobin, is a naturally-occurring, metabolically-important organometallic compound containing a large organic components (porphyrin and protein), a metal (cobalt), a bond between the metal and the carbon of a methyl group. Despite the presence of metal ions or metal-carbon bonds, gold cyanide, calcium carbonate, and nickel tetracarbonyl (to name just a few such) are inorganic, rather than organometallic, compounds.

Adding to the confusion, the oxides of carbon, carbonate salts, and materials containing carbon like steel and diamond are usually considered inorganic, while the inorganic molecule nitric oxide is often studied for biochemical effects.

While inorganic chemistry deals with these on a molecular level, the study of these materials in bulk is called materials science.