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It would appear that violet phosphorus is a polymer of high relative molecular mass, which on heating breaks down into P 2 molecules. On cooling, these would normally dimerize to give P 4 molecules (i.e. white phosphorus) but, in a vacuum , they link up again to form the polymeric violet allotrope.
White phosphorus, yellow phosphorus, or simply tetraphosphorus (P 4) is an allotrope of phosphorus.It is a translucent waxy solid that quickly yellows in light (due to its photochemical conversion into red phosphorus), [2] and impure white phosphorus is for this reason called yellow phosphorus.
Sodium phosphide is the inorganic compound with the formula Na 3 P. It is a black solid. It is often described as Na + salt of the P 3− anion. [2] Na 3 P is a source of the highly reactive phosphide anion. It should not be confused with sodium phosphate, Na 3 PO 4.
Since the ends are condensed, its formula has one less H 2 O (water) than tripolyphosphoric acid. The general formula of a phosphoric acid is H n−2x+2 P n O 3n−x+1, where n is the number of phosphorus atoms and x is the number of fundamental cycles in the molecule's structure; that is, the minimum number of bonds that would have to be ...
Sodium tripolyphosphate made from phosphoric acid is used in laundry detergents in some countries, but banned for this use in others. [24] This compound softens the water to enhance the performance of the detergents and to prevent pipe/boiler tube corrosion .
Another shorthand structural diagram is the skeletal formula (also known as a bond-line formula or carbon skeleton diagram). In a skeletal formula, carbon atoms are not signified by the symbol C but by the vertices of the lines. Hydrogen atoms bonded to carbon are not shown—they can be inferred by counting the number of bonds to a particular ...
Most of the four-site water models use an OH distance and HOH angle which match those of the free water molecule. One exception is the OPC model, in which no geometry constraints are imposed other than the fundamental C 2v molecular symmetry of the water molecule. Instead, the point charges and their positions are optimized to best describe the ...
Phosphorus pentoxide is a chemical compound with molecular formula P 4 O 10 (with its common name derived from its empirical formula, P 2 O 5). This white crystalline solid is the anhydride of phosphoric acid. It is a powerful desiccant and dehydrating agent.