It is solid
Phosphorus is chemical element and its symbol is P. Phosphorous is a nonmetal. Its atomic number is 15. The standard atomic weight of 30.97 grams per mole. It is solid at room temperature. The melting and boiling points of phosphorous are 317.3 kelvin and 550 kelvin respectively. It is present in 15th group and 3rd period of periodic table. The electronic configuration of phosphorous is [Ne] 3s2 3p3. The number of electrons in per shell of phosphorous atom is 2, 8 and 5.