Unlike white phosphorus, red phosphorus does not glow or burn in air, although it still requires careful handling. P stands for the chemical element phosphorus, from the periodic table. White phosphorus is converted to red phosphorus when exposed to sunlight or heated in its own vapor to 250☌. It causes severe burns when in contact with skin. White phosphorus should be stored under water and handled with forceps. It is highly poisonous, with a lethal dose of ~50 mg. Phosphorus burns spontaneously in air to its pentoxide. There are 118 elements on the periodic table. Phosphorus is insoluble in water, but soluble in carbon disulfide. Heres a list of all of the chemical elements of the periodic table ordered by increasing atomic number. It is colorless and transparent in its pure form. Phosphorus (pronunciation: FOS-fer-es) is a highly-reactive element classified as a non-metal represented by the chemical symbol P.

elements where the p sub-shell is being filled (6 per period from period 2 onwards). Ordinary phosphorus is a waxy white solid. p block elements have an outer electron configuration of s2p1 to s2p6 i.e. White phosphorus exhibits a and b modifications, with a transition temperature between the two forms at -3.8☌. There are four allotropic forms of phosphorus: two forms of white (or yellow), red, and black (or violet). Properties: The melting point of phosphorus (white) is 44.1☌, boiling point (white) is 280☌, specific gravity (white) is 1.82, (red) 2.20, (black) 2.25-2.69, with a valence of 3 or 5.

P element periodic table