PI5
phosphorus pentaoxide or p2o5 dimerises into p4o10
Pentaiodide is a compound composed of five iodine atoms bound together. Its chemical formula is I5. It is a highly reactive and unstable compound that is rarely encountered outside of a laboratory setting.
The imaginary compound nitrogen pentaiodide would be NI5 , it would not be an acid- there are no ionisable H atoms. (or a Lewis acid- it has no lone pair.) There is a real compound NI3, a very unstable substance a contact explosive. There is a reported PI5, but that is disputed.
The chemical formula for Phosphorus Difluorochloride is PF2Cl.
The chemical formula for phosphorus trifluoride is PF3.
phosphorus pentaoxide or p2o5 dimerises into p4o10
The formula for heptasilicon pentaiodide is Si7I5. It consists of seven silicon atoms and five iodine atoms bonded together in a specific arrangement.
Pentaiodide is a compound composed of five iodine atoms bound together. Its chemical formula is I5. It is a highly reactive and unstable compound that is rarely encountered outside of a laboratory setting.
The imaginary compound nitrogen pentaiodide would be NI5 , it would not be an acid- there are no ionisable H atoms. (or a Lewis acid- it has no lone pair.) There is a real compound NI3, a very unstable substance a contact explosive. There is a reported PI5, but that is disputed.
The formula for phosphorus pentachloride is PCl5.
The chemical formula for phosphorus mononitride is PN.
The formula for phosphorus monochloride is PCl.
The chemical formula for phosphorus acid is H3PO3.
The chemical formula for Phosphorus Difluorochloride is PF2Cl.
The chemical formula for phosphorus trifluoride is PF3.
The compound formula for phosphorus tribromide is PBr3.
There is no "formula" for "calcium and phosphorus". The symbol for calcium is Ca; the symbol for phosphorus is P. You'd have to specify an actual compound in order to get a formula.