P is the chemical symbol for phosphorus.
But you are correct in believing that the two most comman allotropes of phosphorus (red and white phosphorus) exist as P4. a tetrahedral arrangement of 4 phosphorus atoms.
Another alloptrope is P2- Diphosphorus, which is highly reactive.
Formula: P2O3
Phosphorus may rarely be seen as P, but it will usually be seen as white or red phosphorus, both of which are P4. White P4 is a tetrahedral structure. Red P4 is a chain-like structure, where one of the bonds from white P4 is broken and joined with a neighboring P4.
Phosphorus pentachloride is a chemical compound with the formula PCl5.
Malathion is used as an insecticide. It has the chemical formula C10H19O6PS2 and contains carbon, hydrogen, oxygen, phosphorous and sulfur.
Iron Phosphphide = FeP Iron (III) = Fe3+ Phosphorous= P3_
Formula: P4
Formula: P4
The chemical symbol (not formula) of phosphorous is P; the chemical symbol (not formula) of chlorine is Cl.
Formula: P4
P4
The molecular formula of tetraphosphorous hexaoxide is P4O6. It's components are phosphorous (P) and oxygen (O) with a weight of 219.89 grams/mole.
Formula: P2O3
The chemical formula is PI3.
PCl3 is the chemical formula for phosphorous trichloride.
P (That's it.) -------------- This answer was wrong. White phosporus, for example, is P4. For more information , please see the link.
Phosphorous Trioxide
PFl5