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Bromochlorodifluoromethane (BCF), also referred to by the code numbers Halon 1211 and Freon 12B1, is a haloalkane with the chemical formula C F 2 Cl Br. It is used for fire suppression, especially for expensive equipment or items that could be damaged by the residue from other types of extinguishers. [ 1 ]
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List of chemical elements. 118 chemical elements have been identified and named officially by IUPAC. A chemical element, often simply called an element, is a type of atom which has a specific number of protons in its atomic nucleus (i.e., a specific atomic number, or Z ). [ 1]
Left-step periodic table (by Charles Janet) This form of periodic table is congruent with the order in which electron shells are ideally filled according to the Madelung rule, as shown in the accompanying sequence in the left margin (read from top to bottom, left to right). The experimentally determined ground-state electron configurations of ...
Periodic table (by Goldschmidt classification) Goldschmidt classification: Lithophile Siderophile Chalcophile Atmophile Trace/Synthetic.
Filet mignon (pork) cooking in a pan. In France, the term filet mignon refers to pork. The cut of beef referred to as filet mignon in the United States has various names across the rest of Europe; e.g., filet de bœuf in French and filet pur in Belgium, fillet steak in the UK, Filetsteak in German, solomillo in Spanish (filet in Catalan), lombo in Portuguese, filee steik in Estonian, and ...
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