P2O5 is the empirical formula for the polymorph of P4O10. It is called phosphorous pentoxide under IUPAC naming conventions, but also known as phosphoric anhydride and diphosphorous pentoxide.
I do think that they are molecules.
molecules
Two or more atoms of different elements joined together form a compound. If it is a metal and non-metal (for example sodium and chlorine), they are ionically bonded. If it is two non-metals (for example methane is carbon and hydrogen), they are covalently bonded.
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P2O5 is the empirical formula for phosphorus(V) oxide, P4O10.
I do think that they are molecules.
Covalent compounds
molecules
The name of P2O5 is phosphorus pentoxide. It is a white solid that is used as a desiccant and dehydrating agent..
The chemical name for the formula P2O5 is phosphorous pentoxide. It has a relatively complex structure of two rings. Each ring has multiple phosphorus atoms double bonded to oxygens.
Two or more atoms of different elements joined together form a compound. If it is a metal and non-metal (for example sodium and chlorine), they are ionically bonded. If it is two non-metals (for example methane is carbon and hydrogen), they are covalently bonded.
N2 is nitrogen. But it is an element, not a compound.
Table salt, or NaCl, does not form molecules - rather, it is a collection of Na+ and Cl- ions in a 1:1 ratio, hence the name "ionic compound". Water, or H2O, is a molecule. It consists of two hydrogen atoms covalently bonded to a central oxygen atom.
Diphosphorus Pentoxide is the name of the formula P2O5.
No. A hydrocarbon is a molecule that is made up of just hydrogen and carbon, as the name implies. Diamond is made of a "diamond lattice" of carbon atoms bonded together covalently, but contains no hydrogen. A common example of a hydrocarbon would be propane or methane.
H2O is water. There is no chemical name for it. Water is two hydrogen atoms covalently bonded to a single oxygen atom.
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